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Shimano Ultegra CN-6600 10-Speed Chain - Hyperglide 10-Speed chain - Ultegra 6600 and 105 5600 chains are recommended for use in conjunction with Ultegra 6703 and 105 5703 triple - Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts) - Chromized rivet pins improve wear resistance - Zinc-alloy plated outer link surface treatment - Chain Connection Type: Pressed Pin - Color: Silver/Gray - Defined Color: Silver - Drivetrain Speeds: 10 - Half Link Chain: No - Links (links): 116 - Weight: 280 grams - Width: 6.1mm

It might look normal from the outside, but the engineering inside this incredible chain design is anything but normal, and it makes possible a gear range previously found only in 2-chainring drivetrains. And it’s also the biggest contributor to the Eagle drivetrain’s ultra-smooth, precise, durable and quiet performance. The Eagle chain’s links have a smooth radius, with no sharp edges or chamfers, which yield a significant reduction in noise, friction and wear on chainrings and cassette cogs. This design also allows for a flatter plate, which means more consistent chain riveting and greater overall strength. HARD CHROME technology extends the chain’s optimal performance life.

Shimano Tiagra CN-4601 10-Speed Chains - For Ultegra 6703 and 105 5703 triple drivetrains, please see 10-Speed Hyperglide non-directional chains - Hyperglide 10-Speed chain - Not compatible with Shimano 10-Speed Dyna-sys mountain bike drivetrains - Directional inner and outer plates designed for better contact with gear teeth allow smooth shifting even under high load conditions - Chromized rivet pins improve wear resistance - Perforated plates for reduced weight - 116 links

It might look normal from the outside, but the engineering inside this incredible new chain design is anything but normal and it makes possible a gear range previously found only in 2-chainring drivetrains. And it’s also the biggest contributor to the Eagle drivetrain’s ultra-smooth, precise, durable and quiet performance. The Eagle chain’s links have a smooth radius, with no sharp edges or chamfers, which yield a significant reduction in noise, friction and wear on chainrings and cassette cogs. This design also allows for a flatter plate, which means more consistent chain riveting and greater overall strength. HARD CHROME technology extends the chain’s optimal performance life, and a Titanium Nitride coating on the Gold and Black models decreases corrosion and further reduces friction.

With SRAM's X1 Chain, it's 1x11 all the time, so the chain can be narrower, stronger, faster — all because it doesn't have to deal with high-stress, front chainring shifting. Since it only has to do rear shifts, gear changes are telepathically fast and feathery light. Its "wide tooth, narrow tooth" pattern perfectly matches SRAM's X-Sync chainrings so dropped chains and cumbersome chainguides are a distant memory. The durability is impressive, too, with SRAM's Hard Chrome tech, solid pins and a proprietary link finish for improved life span.

With SRAM's XX1 Chain, it's 1 x 11 all the time, so the chain can be narrower, stronger, faster — all because it doesn't have to deal with high-stress, front chainring shifting. Since it only has to do rear shifts, gear changes are telepathically fast and feathery light. Its "wide tooth, narrow tooth" pattern perfectly matches SRAM's X-Sync chainrings so dropped chains and cumbersome chain-guides are a distant memory. The durability and weight is impressive, too, with SRAM's Hard Chrome tech, hollow pins and a proprietary link finish for improved life span.

The strongest system is a chain with no weak links. Eagle chain links have a smooth radius with no sharp edges or chamfers, which yield a significant reduction in noise, friction, and wear. This design also allows for a flatter plate for more consistent chain riveting and greater overall strength. It's also the biggest contributor to the ultra-smooth, precise, durable, and quiet performance found in the 10-50T cassette and X-SYNC 2 chainrings. Additionally, installation is made easy with a dedicated 12-speed Eagle quick link. - Groundbreaking new chain design and technology - The Eagle chain has been completely re-engineered and is produced with new manufacturing technology. - All-new Eagle Power Lock chain connector with FLOWLINK technology provides better chain-guiding and increased longevity - The Eagle chain is the quietest, strongest, and most wear-resistant chain in the world - Unique features and design also provide significantly improved wear resistance on Eagle cassettes and rings

X-Superlight series chains are high-quality, high performing chains offering amazing shifting performance on any drivetrain you choose. For athletes looking for the lightest, strongest, smoothest shifting chain look no further. The main characteristic of the black Diamond Like Coating (DLC) is reduction of abrasive wear. Besides this, it’s surface hardness is higher than most coatings, this ensures a long-term function, optimal stability and higher durability. - Includes KMC Missing Link 11 - Compatible with all 11 speed systems (including Campagnolo/Shimano/SRAM) - Weight: 243g

The Shimano Dura-Ace RD-R9250 rear derailleur integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worthy of any podium. A single cage length shifts cassettes from 11-28 to 11-34, offering exceptional versatility. - Ultra-fast rear Di2 shifting - Compact design includes an integrated wireless unit, charger, switch - Wider range capacity - Max. low sprocket: 34t - CFRP rear derailleur plate - LED status indicator - Battery indicator, pairing, adjust mode etc.

Paul Components Melvin Chain Tensioner. Converts frames for single speed use. Long enough for a Dingle-setup, (2 rings, one cog) 20T max. - The Melvin uses two pulleys, just like a rear derailleur, which gives it 20 teeth of chain wrap - Will work with multiple front chain rings while maintaining proper chain tension - The pulleys are made of extruded and machined aluminum and have sealed bearings for durability - Pulleys are 2.25mm thick at the tooth which fits inside most narrow 6 through 9 speed chains, and the pulley cage is wide enough to allow 1/8? single speed chains as well - Long enough for a Dingle-setup, (2 rings, one cog) 20T max - Do not use with a coaster brake or fixed gear - Includes Paul's own Sealed Bearing Pulleys

Create a more active urban lifestyle with this durable Shimano CUES RD-U8000 Shadow+ rear derailleur's smooth and decisive shifting performance for 1x11-speed systems. Its low-profile design and chain stabilization give riders the confidence to choose rougher routes. Plus, the premium machine-finished aluminum textures showcase the integration of design and engineering. - Seamless shifting and pedaling performance that's made to last - Chain stabilizer reduces chain drop, slap and noise - Shadow+ low-profile design protects rear derailleur from obstacles in a wide variety of riding scenes - Stylish and polished aluminum finish with machine-cut textures - 13t pulley wheels - Compatible with LINKGLIDE AND HG 11-speed chains

- 1x11-speed SHIMANO SHADOW RD+ rear derailleur - MTB: Direct attachment (Shadow+) - 11T Min top Sprocket - 51T Max Low Sprocket - Stable drivetrain on the trail - Low-profile design avoids damage from rocks - Chain stabilizer reduces chain drop, slap and noise - Silent drivetrain in all gear positions - Decreased rear derailleur and chain tension in low gear - Bigger 13T pulley

- 1x12-speed SHIMANO SHADOW RD+ rear derailleur - MTB: Direct attachment (Shadow+) - 10T Min top Sprocket - 51T Max Low Sprocket - Fast and precise shifting for modern mountain biking - Silent drivetrain in all gear positions - Decreased rear derailleur and chain tension in low gear - Bigger 13T pulley - Stable drivetrain in rough terrain - Low-profile design avoids damage from rocks - Chain stabilizer reduces chain drop, slap and noise

Explore the benefits of trekking and urban e-biking with this durable Shimano CUES RD-U8020 Shadow+ rear derailleur's smooth and decisive shifting performance for 2x11-speed systems. A low-profile design and chain stabilization give riders the confidence to keep going. Plus, its premium machine-finished aluminum textures showcase the integration of design and engineering. - Seamless shifting and pedaling performance that's made to last - Chain stabilizer reduces chain drop, slap and noise - Shadow+ low-profile design protects rear derailleur from obstacles in a wide variety of riding scenes - Stylish and polished aluminum finish with machine-cut textures - 11t upper and 13t lower pulley wheels - Compatible with LINKGLIDE AND HG 11-speed chains

A Material That Offers Resistance The concept that the IvyTex technology is based on has already been in use for several years in industrial applications in areas subjected to high wear, where moving parts have to be protected against wear and tear. ABUS has taken advantage of this concept by using it in the sleeves for its chain locks. The effect of this is twofold: it provides protection against wear and tear, and it prevents the chain from causing damage to the bicycle. IvyTex technology has many other benefits aside from its durability. The hi-tech fabric is highly flexible, weatherproof, and resistant to liquids. This prevents water from being absorbed by the fabric, thereby protecting the locks against corrosion. Its durability also means that there's no excuse for not securing your bicycle, even if the weather is bad and you worry about the lock getting dirty. - 6mm square chain with functional, long-lasting, and highly-flexible mesh sleeve to prevent damage to the bicycle's paint - The sleeve offers very high protection against abrasion and does not absorb any liquids, e.g. water or oil - The chain, the case, and supporting elements of the locking mechanism are made of specially hardened steel

The all-new SRAM RED chain was redeveloped from the ground up. The unique link shape allows the chain to be narrower and lighter while increasing strength and providing more space between the outer plates of the chain and the cogs on either side. The result: a quieter chain with faster, more precise shifts. - Flattop technology enables a narrower chain with quieter operation and increased strength and durability - Hard Chrome plated inner link plates and rollers for reduced wear and prolonged life - HollowPin construction for increased strength and efficiency - Chain length: 114 links

A Material That Offers Resistance The concept that the IvyTex technology is based on has already been in use for several years in industrial applications in areas subjected to high wear, where moving parts have to be protected against wear and tear. ABUS has taken advantage of this concept by using it in the sleeves for its chain locks. The effect of this is twofold: it provides protection against wear and tear, as well as preventing the chain from causing damage to the bicycle. IvyTex technology has many other benefits aside from its durability. The hi-tech fabric is also highly flexible as well as weatherproof and resistant to liquids. This prevents water from being absorbed by the fabric, thereby protecting the locks against corrosion. Its durability also means that there's no excuse for not securing your bicycle, even if the weather is bad and you worry about the lock getting dirty. - 7mm square chain with functional, long-lasting, and highly-flexible mesh sleeve to prevent damage to the bicycle's paint - The sleeve offers very high protection against abrasion and does not absorb any liquids, e.g. water or oil - The chain, the case, and supporting elements of the locking mechanism are made of specially hardened steel

The SRAM Force 1 rear derailleur adopts all the technologies of SRAM 1x MTB to provide the fastest, quietest 1x shifting available. SRAM’s unique clutch system eliminates chain slack, providing for smoother, quieter, and more secure chain travel. - A dedicated 1x rear derailleur - EXACT ACTUATION for fast and accurate shifts using SRAM’s 1:1 actuation ratio (shifter cable travel: derailleur movement). - 10- and 11-speed compatible - X-SYNC pulley features a 12-tooth design that helps control the chain’s lateral movement - X-HORIZON “straight parallelogram” design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force - ROLLER BEARING CLUTCH’s one-way roller clutch controls chain tension for consistent shifting - Cage Lock technology makes for fast wheel changes or chain installation - Available in Short: 11-26 through 11-28 / Medium: 11-26 through 11-36 / Long 11-32 through 10-42 cage lengths Short Cage: Chain Wrap Capacity (teeth): 18 teeth Largest Cog: 28 Weight: 250 g Medium Cage: Chain Wrap Capacity (teeth): 26 teeth Largest Cog: 36 Weight: 262 g Long Cage: Chain Wrap Capacity (teeth): 32 teeth Largest Cog: 42 Weight: 271 g

With Eagle Transmission being the first of its kind, fully integrated and interdependent system, the X0 Eagle Transmission (T-Type) Flattop Chain is so much more than just a chain. Its unique flat top design makes it the strongest chain SRAM has ever made. It features a Dark Polar finish specific to X0, has been plated with electroless nickel, and comes with a PVD coating for unbelievable resistance to corrosion and wear. - Specifically engineered for Eagle Transmission - Flattop profile, unbelievable shifting performance, game-changing aesthetics - Electroless Nickel plating for optimal corrosion and wear resistance with PVD coating - Includes PowerLock connector - Fully approved for E-MTB use with solid pins.

- Quickly and accurately determine the wear and stretch of any chain

Campagnolo's Record 11-Speed Chain is the right choice for Campagnolo 11-speed drivetrains. This fine chain is engineered for excellent strength, long wear and brilliant shifting thanks to a unidirectional design and an anti-friction treatment that lets it glide across your cassette. It also boasts hollow pins to keep your bicycle as light as possible.

The SLX M7100 series of derailleurs deliver advanced shifting performance with decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with Shimano's new 12-speed cassettes boosts range. - Advanced shifting performance provides the confidence to enjoy any trail - Fast and shockless shifting - Hyperglide+ - Extra wide range 12-speed drivetrain -10-51T (12-speed) - Silent drivetrain in all gear positions - Decreased rear derailleur and chain tension in low gear - New bumper added to rear derailleur pulley cage - Bump Stopper - Bigger 13T pulley - Stable drivetrain on rough terrain - Low-profile design - Shimano Shadow RD+

Shimano's Deore Shadow+ Rear Derailleur is loaded with mountain bike technology. The Shadow design tucks the rear derailleur closer in to the wheel, reducing damage from rocks, roots, and trail obstacles. When it comes to gear changes, Shimano's Dyna-Sys supplies consistent, smooth shifting across the entire cassette. And the Shadow+ clutch maximizes chain control by virtually eliminating chain slap and excess noise with its integrated cage-tensioning clutch. - Medium Cage (for 2x10 drivetrains) - Long Cage (for 3x10 drivetrains) - For use with Shimano 10-speed drivetrains - High-efficiency drivetrain for aggressive trail riding - Optimized gear combinations and ratios for trail riding - Maximum chain wrap capacity: 41T (medium cage)/43T (long cage) - Largest cog: 42T (medium cage)/36T (long cage) - Compatible with wide range cassette - Silent and stable for technical trail riding - Improved stability and chain retention longevity - Light shifting effort - OPTISLICK cable - Smooth and precise shifting - DYNA-SYS compatible system

Run silent, run deep. Shimano's ZEE rear derailleur uses a short cage and a Shadow profile to keep tucked out of the way of rocks, roots, whatever. The Plus part is a one-way clutch system that stabilizes the cage and your chain when ripping over rough terrain. Chain slap and the noise that goes with it, as well as dropped chains, are virtually eliminated. Of course, it still has the smooth action and sniper-like shifting that Shimano is rightly famous for. Freeriders and trail riders can run a typical MTB cassette like an 11-32, 11-34, or 11-36. And DHers can choose the close-ratio version and run a road cassette like 11-23, 11-25 or 11-28.

The Campagnolo C13 EKAR Chain was developed specifically for the EKAR 1x13-speed gravel system. - Wide-narrow design allows for efficient drive, smooth shifts and high security - The narrow profile is lightweight, strong, and efficient - Strong, durable, links feature different grades of steel and coatings for strength and to withstand wear - Unique ultrasound bath lubrication impregnation system for long chain life - C-Link allows for easy removal and cleaning Specifications: - Links: 117 - Chain Connection Type: Quick Link - Drivetrain Speeds: 13 - Weight: 242g

SRAM's X01 Rear Derailleur packs a massive amount of technology into its compact, lightweight body. This 11-speed gear changer uses a “horizontal parallelogram” design that limits all movement to the horizontal axis, reducing the force it takes to shift. The Type 2 clutch is brilliant. This self-lubricating, one-way roller clutch controls your chain tension to eliminate chain slap and give you smooth, consistent shifts over any terrain. For quicker, smoother, more exact shifting, the large upper pulley's offset design maintains a consistent chain gap across all gears.

The KMC HL1L Wide chain is suitable for a variety of single-speed riding styles, such as BMX or fixed gear. - Compatible with Shimano, SRAM, and Campagnolo drivetrains - Stretch-proof treatments provides exceptional durability - Hollow pin construction reduces chain weight - Links (links): 100 - Color: Black - Width: 9.5 mm - Drivetrain Speeds: Single Speed - Chain Connection Type: Bullet Pin - Half Link Chain: Yes

The KMC Z1 Wide EPT chain is a durable and low-maintenance chain suited for all single-speed riding styles, such as BMX and fixed gear, fitness bikes, internally geared hub systems, and share bikes. - Eco ProTeQ treatment offers superior anti-rust protection - Anti-drop design provides increased chain retention

The K-Force Light chain is FSA’s premium offering for 11-speed systems. Whether you’re on the road or hitting the trail, you’ll certainly appreciate all the technology this chain offers. Hollow pins reduce weight, optimized outer plate shapes reduce shift noise, and plate chamfers decrease sprocket wear while increasing shifting precision. If you’re looking for a chain with unrivaled durability and performance, choose the K-Force Light. - Designed to be used with all 11-speed drivetrains - Nickel plated links w/FSA logo - Chamfered to optimize shifting performance - 5.5mm width - Tool-free connector link included - 245g

The KMC e101 chain is designed for single speed bikes such as BMX, fixed gear, or track, and is rated for use with an eBike motor. - The KMC e101 chain is designed for single speed bikes such as BMX, fixed gear, or track, and is rated for use with an eBike motor. - Triple X Durability technology means that this chain features KMC's highest durability rating - Double X bridge shape with inner and outer plate chamfering for smooth and fast shifting - Mushroom riveted pins for the highest pin power and allows shifting under heavy loads

The basis of every Eagle drivetrain is its chain—and the NX Eagle chain is designed and manufactured using genuine SRAM Eagle architecture, so it is fully compatible with every other component in the Eagle ecosystem. The NX Eagle chain features solid pin construction, Eagle PowerLock, and smooth, efficient shifting that you can count on every time out. Features/Specs - Eagle PowerLock chain connector with FLOW LINK technology provides better chain-guiding and increased longevity - Unique features and design also provide significantly improved wear resistance on Eagle cassettes and rings - Weight: 278g (126 links) - Material: steel - Speeds: 12 - Compatibility: All levels of Eagle drivetrain systems

Eleven speeds to rule all the trails. That is the X1 Rear Derailleur's motto. It packs a massive amount of technology into its compact, lightweight aluminum body. This 11-speed gear changer uses a “horizontal parallelogram” design that limits all movement to the horizontal axis, reducing the force it takes to shift. The Type 2 clutch is brilliant. This self-lubricating, one-way roller clutch controls your chain tension to eliminate chain slap and give you smooth, consistent shifts over any terrain. For quicker, smoother, more exact shifting, the large upper pulley's offset design maintains a consistent chain gap across all gears.

For smooth shifting and a quiet drivetrain, pick up Campagnolo's Chorus 11-speed chain. It's unidirectional for unparalleled function and features lightweight hollow pins as well as an anti-friction treatment for shifting perfection. It also boasts excellent wear and flex resistance.

Find new ways to enjoy trekking and daily flat-handlebar riding with this reliable rear Shimano CUES RD-U6020 Shadow derailleur's seamless shifting and pedaling. Its low-profile design and chain stabilization give riders the confidence to choose rougher routes. Plus, e-bikers will benefit from reliable, long-lasting performance thanks to its eBike rated design. - Stable drivetrain performance on trails, gravel, and city streets - Shadow low-profile design protects rear derailleur from obstacles in a wide variety of riding scenes - Designed and tested to provide enduring e-biking performance - 11t upper and 13t lower pulley wheels - Compatible with LINKGLIDE AND HG 11-speed chains

The RD-M9100 XTR rear derailleur is intended for use with 1x drivetrains. It is compatible with both 11- and 12-speed cassettes. - Decreased rear derailleur tension at low gear position, to prevent high chain tension - Added bumper at rear derailleur pulley cage - Bigger 13T pulley - Direct mount compatible - Compatible cassette size: 10-51 (12-speed), 10-45 (11-speed) - Total capacity: 35t (GS Medium Cage) / 41t (SGS Long Cage)

Super Narrow SIL-TEC HG-X11 Chain (11-speed) FEATURE - Rear drive Smooth driving without noise - Front drive Preserve chain security at cross chainline - Front & Rear Shift Smooth and reliable shifting BENEFIT - HG-X11 special asymmetric plate design for 11-speed - Weight: 247g (114Link) - SIL-TEC on Plate/Roller - Hollow pin - Weight: 247g (114Link)

The KMC HL1 Narrow chain is suitable for a variety of single-speed riding styles, such as BMX or fixed gear. - Compatible with Shimano, SRAM, and Campagnolo drivetrains - Links (links): 100 - Drivetrain Speeds: Single Speed - Chain Connection Type: Bullet Pin

The Cult half link chain features teflon coating engraved with cult logos and is designed to help dial in the rear end length on frames with short dropouts. - Rounded side plates are compatible with 8T and larger drivers - Color: Black - Width: 1/2 x 1/8 mm - Drivetrain Speeds: Single Speed - Chain Connection Type: Pressed Pin - Half Link Chain: Yes

The KMC Z1eHX chain is suitable for a variety of single speed riding styles, such as BMX and fixed gear, fitness bikes, track bikes, internally geared hubs, and eBikes. - Features a heavy duty structure and stretch proof treatment for high pin power with reinforced durability - Anti-drop design reduces possibility of chain drop - eBike compatible - Links (links): 112 - Width: 7.8 mm - Drivetrain Speeds: Single Speed - Chain Connection Type: Single Use Master Link - Designed for ebike: Yes

The KMC K1SL SuperLite Kool Chain is suitable for a variety of single-speed riding styles, such as BMX or fixed gear, while offering substantial weight savings. - SL Chain sets a new standard with weight reduction, improved shifting performance & enhanced durability - The mud-shedding design is easy to clean - Chain features a heavy duty structure and is treated with a stretch proof treatment for maximum durability - Designed with KMC's Special Dynamic K Configuration which offers unsurpassable chain strength - Inner plate chamfering provides expeditious shifting - Features an anti-drop design - Links (links): 100 - Width: 7.7 mm - Drivetrain Speeds: Single Speed - Chain Connection Type: Single Use Master Link - Weight: 377 g

The KMC K1SL SuperLite Kool Chain is suitable for a variety of single-speed riding styles, such as BMX or fixed gear, while offering substantial weight savings. - SL Chain sets a new standard with weight reduction, improved shifting performance & enhanced durability - The mud-shedding design is easy to clean - Chain features a heavy duty structure and is treated with a stretch proof treatment for maximum durability - Designed with KMC's Special Dynamic K Configuration which offers unsurpassable chain strength - Inner plate chamfering provides expeditious shifting - Features an anti-drop design - Links (links): 100 - Width: 9.5 mm - Drivetrain Speeds: Single Speed - Chain Connection Type: Single Use Master Link - Weight: 349 g

- Easy to use tool for checking chain wear

SRAM's GX 1x11 X-Horizon rear derailleur is engineered for smooth, reliable shifting action—from the larger upper pulley offset to the 12-tooth X-Sync pulley wheels. By eliminating unwanted chain movement, this X-Horizon rear derailleur shifts faster, puts an end to ghost shifting, and reduces shift force and chain slap. And with Cage Lock technology, wheel removal and installation are easier than ever. • Long cage • X-Horizon design reduces shift force, ghost shifting, and chain slap • 12-tooth X-Sync pulley wheels • Large upper pulley offset automatically adjusts chain gap • Sealed cartridge bearings • Aluminum Cage

The KMC e12 Chain is designed for use with 12-speed eBike systems. - Features KMC's highest pin power for unsurpassed riveting geometry - KMC's Triple X durability - Double "X" bridge shape allows for precise gear shifting - This chain is eBike compatible thanks to its high torsion resistance - Outer plate chamfering allows for accurate shifting - Inner plate chamfering allows for expeditious shifting

The KMC S1 is a single-speed chain suitable for use with internally geared hubs, or any single speed drivetrain. - High pin power with reinforced durability - Offers a quieter riding experience - Anti-drop design - Inner plate chamfering helps to provide fast and smooth shifting - Internal gear hub system compatible - Links (links): 112 - Color: Silver - Width: 9.3mm - Drivetrain Speeds: Single Speed 1/2 x 1/8-inch - Half Link Chain: No

With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience with shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain stabilizer. The RD-RX812 rear derailleur is compatible with MTB cassettes with a max cog size of 42T. - Adjustable, gravel-tuned chain stabilizer prevents chain slapping and drops - Switch stabilizer ON/OFF to match the terrain - Silent and uninterrupted rear shifting on rough terrain - Smooth and reliable mixed-surface shifting - Compatible with current road Dual Control Levers - High cog: Max. 11T/Min. 11T - Low cog: Max. 42T/Min. 40T - Total capacity: 31T

With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience while delivering shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain stabilizer. The RD-RX810 rear derailleur is compatible with road cassettes with a max cog size of 34T. - Adjustable, gravel-tuned chain stabilizer prevents chain slapping and drops - Switch stabilizer ON/OFF to match the terrain - Silent and uninterrupted rear shifting on rough terrain - Low cog: Max. 34T/Min. 30T - High cog: Max. 11T/Min. 11T - Total capacity: 40T - Compatible with current road Dual Control Lever - Maximum front chainring range: 17T

SRAM’s Apex 1 drivetrain provides the gear range and the shifting simplicity to let you simply go where you want. The Apex 1 rear derailleur makes that gearing choice a reality with clean, crisp shifts, thanks to SRAM’s X-Horizon geometry and their Roller Bearing Clutch. - X-Horizon design reduces shift force, eliminates ghost shifting and chain slap - Compatible with 10-speed and 11-speed SRAM 1x road systems - With Cage Lock technology, wheel removal and installation are easier than ever - Equipped with Roller Bearing Clutch - Large upper pulley offset automatically adjusts chain gap - Weight: 314 grams - Outer Cage: Steel - Compatibility: 10-speed and 11-speed SRAM 1x road systems - Inner Cage: Steel - Cage Size: Long - Max Tooth: 42t - Pulleys: Sealed cartridge bearings - Pull: Exact Actuation

The 7-speed X-HORIZON rear derailleur makes shifting smooth and reliable no matter where you ride. Engineered to maintain consistent chain gap across all seven gears, X-HORIZON eliminates vertical movement for faster shifting, reduced shift force, and an end to ghost shifting. Our new, Type-3 roller bearing clutch features a smoother torque curve for a quieter, more consistent operation and feel. The 12-tooth X-SYNC pulley wheel holds the chain in place, reducing bounce and chain slap. Additionally, CAGE LOCK technology makes wheel removal and installation easier than ever. Paired with the X01 DH 7-speed shifter, X-HORIZON forms the backbone of X-ACTUATION technology—and that means completely smooth shifting action. - Updated design of the rear derailleur incorporates our proven X-HORIZON design and new Type-3 roller bearing clutch technology - 12-tooth X-SYNC pulley wheels - Large upper pulley offset automatically adjusts chain gap - Sealed cartridge bearings

The SRAM Rival 1 rear derailleur is engineered for smooth, reliable shifting action, delivering 100% of what you demand. By eliminating unwanted chain movement, X-HORIZON shifts faster, reducing shift effort and chain slap. - X-HORIZON design reduces shift force while eliminating ghost shifting and chain slap - Large upper pulley offset automatically adjusts chain gap - Sealed cartridge bearings and aluminum cage - Technologies: X-HORIZON, EXACT ACTUATION, X-SYNC, ROLLER BEARING CLUTCH, Cage Lock - Medium cage: 11-26 through 11-36 cassettes, 269g - Long cage: 10-42 cassette, 275 g

With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience with shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain stabilizer. The RD-RX817 Di2 version offers the digital precision of Shimano electronic shifting, as well as synchronized shifting and is compatible with MTB cassettes with a max cog size of 42T. - Adjustable, gravel-tuned chain stabilizer prevents chain slapping and drops - Switch stabilizer ON/OFF to match the terrain - Silent and uninterrupted rear shifting on rough terrain - Compatible with current road Dual Control Levers - High cog: Max. 11T/Min. 11T - Low cog: Max. 42T/Min. 40T - Total capacity: 31T

Eagle range on a drop bar bike? Now that's a party. The Apex Eagle rear derailleur quietly and quickly shifts across our 12-speed Eagle cassettes, while 1x-specific chain retention technology keeps the chain where it needs to be. It's the best of our road and mountain bike innovations in one package. - Compatible with 50T and 52T Eagle cassettes - Works with 12-speed mechanical Apex and Eagle shifters - Use with Eagle chain - Roller Bearing Clutch controls chain tension for consistent shifting - X-HORIZON straight parallelogram design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force - Cage Lock technology makes for fast wheel changes or chain installation

The SRAM NX X-HORIZON rear derailleur provides the same smooth, reliable shifting action as XX1—from the larger upper pulley offset to the 12-tooth X-SYNC pulley wheels. By eliminating unwanted chain movement, X-HORIZON shifts faster, puts an end to ghost shifting and reduces shift force and chain slap. And with Cage Lock technology, wheel removal and installation are easier than ever. - X-HORIZON design that reduces shift force, ghost shifting and chain slap - 12-tooth X-SYNC pulley wheels - Fully compatible with all SRAM MTB 1x drivetrains - Most affordable fully featured 1x rear derailleur in the industry - Speeds: 11-speed - Weight: 322 grams - Color: Black - Compatibility: X-ACTUATION - Bearings: Steel - Cage Size: Long - Max Tooth: 42

The Campagnolo Chorus 12-speed rear derailleur features 3D Embrace technology and 12-tooth pulley wheels making it suitable for all cassettes as the distance stays optimum on each individual sprocket, regardless of the cassette selected. - Embrace technology not only keeps the rear derailleur vertically aligned in the perfect position for each sprocket, it now makes the upper pulley wheel advance perfectly in the direction the bike is advancing - On rough roads, the spring positioned between the upper body and the pivot absorbs the vibrations, ensuring the chain always rests properly on the sprockets - The pulley wheels on the 12-tooth derailleur cage allow the chain to move more smoothly - The initial position of the rear derailleur can be adjusted to suit any cassette. - The rear derailleur is positioned further back, making it easier to slide the wheel out and replace it - Upper and lower body crafted from technopolymer that is reinforced with long carbon fiber for exceptional durability Specifications: - Largest Cog: 34 - Rear Derailleur Mount Type: 10x1 Standard - Chain Wrap Capacity (teeth): 37 - Cage Length: Medium - Rear Der/Shifter Compatibility: Campy 12-Speed Chorus/Record/Super Record 2019+ - Drivetrain Speeds: 12 - Weight: 240g

With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner. - Adjustable chain stabilizer prevents chain slapping and drops - Switch stabilizer ON/OFF to match the terrain - Gravel-tuned clutch tension - Maximum front T difference: 16T - Silent and uninterrupted rear shifting on rough terrain - Low cog: Max. 36T/Min. 30T - High cog: Max. 11T/Min. 11T - Total capacity: 41T - Smooth and reliable mixed-surface shifting - Compatible with current 10s road DUAL CONTROL LEVER - Compatible with wide-range front gearing

The Shimano Deore XT RD-M8100/M8120 rear derailleur is designed to provide smooth and stable shifting for 12-speed MTB drivetrains. - Offers fast and shockless shifting - The low-profile design includes a bumper added to the derailleur pulley cage - Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain - Includes large, 13T pulley - Long cage is designed to be used with 1x12 drivetrain systems - Rear Derailleur Mount Type: Shimano Rear Direct Mount, 10x1 Standard - Drivetrain Speeds: 12 - Cage Length: Long - Chain Wrap Capacity (teeth): 41 teeth - Largest Cog: 51 - Weight: 284 g - Rear Der/Shifter Compatibility: Shimano Mountain

The Shimano Deore XT RD-M8100/M8120 rear derailleur is designed to provide smooth and stable shifting for 2 x 12-speed MTB drivetrains. - Offers fast and shockless shifting - The low-profile design includes a bumper added to the derailleur pulley cage - Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain - Includes large, 13T pulley - Long cage is designed to be used with 2 x 12 drivetrain systems - Rear Derailleur Mount Type: Shimano Rear Direct Mount - Drivetrain Speeds: 12 - Cage Length: Long - Chain Wrap Capacity (teeth): 45 teeth - Largest Cog: 45 - Weight: 284 g - Rear Der/Shifter Compatibility: Shimano Mountain

Elevating the shift, expanding the capable, the X01 Eagle derailleur features an updated cage architecture to provide better chain management than ever. The X01 Eagle rear derailleur works with the new 10-52T cassettes and is backward-compatible with 10-50T options, as well. - Updated cage provides better chain retention and more precise shifts - Backward-compatible design works with 10-50T and 10-52T cassettes

This one takes all your trail dreams, from XC to enduro, all the way to eleven. SRAM's XX1 rear derailleur packs a massive amount of technology into its compact, lightweight body. It uses a “horizontal parallelogram” design that limits all movement to the horizontal axis, reducing the force it takes to shift. The Type 2 clutch is brilliant. This self-lubricating, one-way roller clutch controls your chain tension to eliminate chain slap and give you smooth, consistent shifts over any terrain. For quicker, smoother, more exact shifting, the large upper pulley's offset design maintains a consistent chain gap across all gears.

Shimano's Saint Rear Derailleur is packed with World Cup-worthy features, like an integrated skid plate, a urethane bump stop, and low-profile Shadow positioning, all of which protect your derailleur as you smash through rock gardens and overgrown singletrack. Shimano Plus Technology minimizes chain and impact noise, and maintains perfect chain tension so you can shift with precision and authority no matter how rough the terrain gets. The Saint Rear Derailleur also has a mode converter that lets you use either a close-ratio DH cassette, or a wider-ratio freeride cassette.