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Rear

Shimano Deore XT Shadow + Rear Derailleur (Long Cage)
$97.99
Shimano's Deore XT Rear Derailleur uses cold-forged construction and cutting edge technology to deliver crisp shifting, real-world reliability, and trademark precision. Plus-type derailleurs use a lever-actuated clutch spring to prevent chain slap, reduce noise while on the trail, and improve chain engagement when riding over rough terrain. Sealed pulley bearings keep things spinning smoothly, and wide plate construction prevents the derailleur from getting clogged with mud and debris.
SRAM RED eTAP Electric Aero Kit
$1,659.00
Step up to the next generation in shifting with SRAM's wireless RED eTAP electric aero drivetrain kit. The aero kit includes Blip shifters, derailleurs, battery charger and USB stick. Brake levers not included. Each kit contains: - 4x SRAM eTAP 650mm Blip remote shifter buttons - SRAM eTAP Blip Box - SRAM RED eTAP wireless front and rear derailleurs - SRAM eTAP batteries - Battery charger - USB stick - Quick-start guide
Shimano XTR Di2 Rear Derailleur (Long Cage)
$630.99
Shimano's unbelievable Di2 technology has made the leap to the trails with their XTR Di2 drivetrain. This rear derailleur features all of the race-day performance you've come to expect from XTR, and the unrivaled stability, speed, and performance of an electronic drivetrain. Since there aren't any cables to stretch or housing to create friction, shift performance stays amazingly perfect, delivering flawless shifts any time, under any condition. System communication with the front derailleur eliminates chain rub and, if you prefer, the rear derailleur can be optimized to use Shimano's Synchronized Shift technology.
Campagnolo Veloce Rear Derailleur (Short-Cage)
$125.00
Campagnolo's Veloce Rear Derailleur uses an advanced-parallelogram design that assures precise and quick shifting. The aluminum construction reduces weight and boosts strength for crisp gear changes. Plus, the pulleys are made from a special material that renders the drivetrain nearly silent.
Campagnolo Veloce Rear Derailleur (Medium-Cage)
$139.99
Campagnolo's Veloce Rear Derailleur uses an advanced-parallelogram design that assures precise and quick shifting. The aluminum construction reduces weight and boosts strength for crisp gear changes. Plus, the pulleys are made from a special material that renders the drivetrain nearly silent.
Campagnolo Record EPS Rear Derailleur
$625.00
Italian beauty meets electronic precision in Campagnolo's brilliant Record EPS Rear Derailleur. Campagnolo uses an advanced parallelogram design for impeccable, lightning-fast shifting of up to all 11 gears with a single button push. Stop on any gear in between and the position sensor makes micro-adjustments to ensure perfect alignment every time. The construction pairs carbon and cold-forged aluminum to create an ultra strong and extremely light derailleur. Plus, the pulleys roll on super-efficient ceramic bearings and are made from a special rubber that renders the drivetrain virtually silent.
Campagnolo Super Record EPS Rear Derailleur
$780.00
Campagnolo's Super Record EPS Rear Derailleur's arresting beauty is entwined with the pinnacle in rear shifting accuracy and precision. Campagnolo uses an advanced-parallelogram design and the extremely high-quality servo motors for precise, fast shifting of up to all 11 gears from a single push of a button. Or stop on any cog and the position sensor makes micro-adjustments to ensure perfect alignment. And this top-tier Italian bike jewelry is constructed from carbon and cold-forged aluminum to create an ultra strong and extremely light derailleur. Plus, the pulleys roll on super-efficient ceramic bearings and are made from a special rubber that renders the drivetrain virtually silent.
Campagnolo Potenza 11 Medium Cage Rear Derailleur
$170.00
If the Potenza 11 rear derailleur looks almost identical to that of the Super Record, it is because its design takes a great deal of inspiration from the recently launched Revolution 11+ drivetrains and guarantees a similar degree of shifting performance as a result. Changing only the materials used in its construction the Potenza 11 rear derailleur is capable of shifting with the precision and speed of the Super Record version with the only compromise coming in the form of weight. Thanks to sophisticated solutions such as Embrace technology, riders using Potenza 11 can count on highly efficient power transfer, secure grip, efficient chain/cassette interface and longer component life previously attributed only to the elite mechanical transmissions from Campagnolo. The Potenza 11 rear derailleur takes top-end performance and technology and takes its versatility one step further by adding a medium cage version capable of shifting flawlessly with an 11-32 cassette. There is now no mountain tall enough nor any climb too steep for Campagnolo. - Lightweight technopolymer upper and lower bodies reduce weight - Features the same shape of Super Record, offering similar shifting performance - Special lightweight rubber pulleys reduce friction and noise - Compatible with Potenza and model year 2015 and newer Chorus, Record and Super Record-Pulley rollers on bushings in sintered material - Drivetrain Speeds: 11 - Cage Length: Medium - Chain Wrap Capacity (teeth): 37 teeth - Largest Cog: 32
Campagnolo Potenza 11 Short Cage Rear Derailleur
$170.00
If the Potenza 11 rear derailleur looks almost identical to that of the Super Record, it is because its design takes a great deal of inspiration from the recently launched Revolution 11+ drivetrains and guarantees a similar degree of shifting performance as a result. Changing only the materials used in its construction the Potenza 11 rear derailleur is capable of shifting with the precision and speed of the Super Record version with the only compromise coming in the form of weight. Thanks to sophisticated solutions such as Embrace technology, riders using Potenza 11 can count on highly efficient power transfer, secure grip, efficient chain/cassette interface and longer component life previously attributed only to the elite mechanical transmissions from Campagnolo. - Lightweight technopolymer upper and lower bodies reduce weight - Features the same shape of Super Record, offering similar shifting performance - Special lightweight rubber pulleys reduce friction and noise - Compatible with Potenza and model year 2015 and newer Chorus, Record and Super Record - Pulley rollers on bushings in sintered material - Drivetrain Speeds: 11 - Cage Length: Short - Chain Wrap Capacity (teeth): 37 teeth - Largest Cog: 29 - Weight: 211 grams
Campagnolo Super Record 11 Short Cage Rear Derailleur
$525.00
Speed, precision, smoothness and better looks: the first rear derailleur with carbon fibre upper and lower body will amaze even the most demanding of cyclists. - New shape of the external components enables the rear derailleur to move according to a different angle and the new internal design keeps the chain nearer the cassette to ensure better power transmission, greater and more secure traction - Embrace technology - Special chainring positioned inside the gear body acts on a rectangular section spring that allows the component to move along a trajectory that perfectly follows the curve of the sprockets - The new two-part system is 53% lighter than steel and 22% lighter than titanium, without compromising resistance and rigidity levels and prolonging component life - Carbon fiber cage plate results in a shifting positioning that is exceedingly precise and extremely light - Ceramic bearings for a very smooth action that in turn reduces friction, prolongs life and shifting performance - Speed: 11-speed - Max: 29 - Cage/Mount: Short
Campagnolo Centaur Medium Cage Rear Derailluer
$100.00 - $110.00
The rear derailleur is the defining component of the Centaur groupset. Inheriting many of the technologies used by Campagnolo’s top-of-the-range rear derailleurs, the Centaur offers shifting performance to meet all requirements – even professionals’. The new Campagnolo Centaur rear derailleur has been designed to be compatible with cassettes with up to 32 teeth. With the upper jockey wheel’s longer teeth, the lower wheel’s smoothed teeth, and a long list of performance-oriented technology, the Centaur rear derailleur is the top component in its class – and all at 15 grams lighter than its competitors. - Lightweight technopolymer upper and lower bodies reinforced with glass fiber for reduce weight and increased strength - Features the same shape of Super Record, offering similar shifting performance - Upper pulley wheel with longer teeth for easier rear shifting - Lower pulley wheel with chamfer teeth for increased smoothness - Pulley wheels with bushings - Drivetrain Speeds: 11 - Cage Length: Medium - Chain Wrap Capacity (teeth): 37 teeth - Rear Der/Shifter Compatibility: Campy Centaur/Potenza/Chorus/Record/Super Record 2015+ - Largest Cog: 32
Campagnolo Chorus 11 Short Cage Rear Derailleur
$270.00
Chorus 11-speed's shifting precision is comparable to its older siblings Record and Super Record. The design and geometry of the rear derailleur are exactly the same. The only difference lies in the materials used, which made it possible to keep a favorable price without lowering the performance levels. A groupset dedicated to competition like the Chorus 11-speed can't forego showing its true competitive spirit, and the carbon fibre front plate is the proof. - The new Chorus HO (Hydrualic Optimized) rear derailleur offers the level of quality of the - - Record series in an affordable package - Carbon main body with aluminum reinforced carbon cage - Pulleys made of a vibration resistant material for smooth function - Ultra-Shift exclusive geometry parallelogram
Wolf Tooth Components 25mm B-Screw
$1.00
- Longer B-screw needed when using 40t or 42t cog with most Shimano derailleurs
Sunlite Long Cage Rear Derailleur
$49.99
• 5/6/7-speed rear derailleur • Highly affordable and reliable • SHIMANO Equivalent RD-TY21 / RD-A070 • 301 grams
Shimano Ultegra 11-Speed Rear Derailleur
$79.99 - $89.99
Shimano's Ultegra Rear Derailleur delivers category-defining 11-speed shifting. At the heart of the derailleur is a light, tough, cold-forged-aluminum body with a wide, rigid pivot design that maximizes shifting speed and equalizes shift effort across the cassette. Smooth-spinning pulleys use sealed bearing to keep out the dirt and ensure quiet running in the miles to come.
Campagnolo Record 11 Medium Cage Rear Derailleur
$350.00
The Campagnolo Record mechanical groupset has always been associated with the greatest cycling successes in pro and amateur races the world over. These victories achieved by this racing bike groupset over the years are a testament to the extreme quality of craftsmanship, technology and fine materials that have always made it stand out as a distinctive product. With the Record 11 Medium Cage Rear Derailleur and Campagnolo quality, you can be sure that victory will be within reach. - Carbon fiber front plate with lightening holes and cage, alloy fixing bolts - Campagnolo Ultra-Shift parallelogram maximizes stiffness, shifting speed and precision - Lightweight technopolymer pulleys in sintered material - Compatible with Potenza and model year 2015 and newer Chorus, Record and Super Record - Not compatible with pre-2015 Campagnolo drivetrains - Drivetrain Speeds: 11 - Cage Length: Medium - Chain Wrap Capacity (teeth): 37 teeth - Largest Cog: 32
Campagnolo Chorus 11 Medium Cage Rear Derailleur
$270.00
Chorus 11-speed's shifting precision is comparable to its older siblings Record and Super Record. The design and geometry of the rear derailleur are exactly the same. The only difference lies in the materials used, which made it possible to keep a favorable price without lowering the performance levels. A groupset dedicated to competition like the Chorus 11-speed can't forego showing its true competitive spirit, and the carbon fibre front plate is the proof. - Carbon fiber front plate and cage and alloy fixing bolts - Campagnolo Ultra-Shift parallelogram maximizes stiffness, shifting speed and precision - Special lightweight rubber pulleys reduce friction and noise - Compatible with Potenza and model year 2015 and newer Chorus, Record and Super Record - Not compatible with pre 2015 Campagnolo drivetrains - Pulley rollers on bushings in sintered material - Drivetrain Speeds: 11 - Cage Length: Medium - Chain Wrap Capacity (teeth): 37 teeth - Largest Cog: 32
Shimano Deore XT Shadow Rear Derailleur (Long Cage) (Top-Normal)
$89.99
Shimano's Deore XT Shadow Rear Derailleur is perfect for today's aggressive, all-mountain riding. The radical design means that the Shadow is super-low profile; it barely protrudes more than the quick release nut. Direct cable routing reduces the chance of the cable snagging on roots and rocks and fires off shifts super quick. A stronger spring keeps the body more stable when blasting through technical terrain at speed and yields a firm, crisp shifting feel. Plus, the redesigned bracket axle keeps the derailleur body from contacting your chainstay and reduces chatter so you just concentrate on the best line.
Shimano XTR Shadow Plus Rear Derailleur (Medium Cage)
$229.99
Shimano blows us away again with the XTR Shadow Plus 10-speed rear derailleur. The Shadow design is already well known and loved for its direct cable routing and low profile that greatly lessens the risk of snagging your cable on roots or tagging your derailleur on rocks. Shimano's Plus derailleur technology is a one-way clutch system that stabilizes the cage and your chain when ripping over rough terrain. Chain slap and noise is virtually eliminated and dropped chains are practically a thing of the past. Of course, it retains XTR's legendary smoothness, light action and super precise shifting. Once you ride a Plus derailleur, you'll never want to ride without it!
Shimano XTR Shadow Plus Rear Derailleur (Long Cage)
$229.99
Shimano blows us away again with the XTR Shadow Plus 10-speed rear derailleur. The Shadow design is already well known and loved for its direct cable routing and low profile that greatly lessens the risk of snagging your cable on roots or tagging your derailleur on rocks. Shimano's Plus derailleur technology is a one-way clutch system that stabilizes the cage and your chain when ripping over rough terrain. Chain slap and noise is virtually eliminated anddropped chains are practically a thing of the past. Of course, it retains XTR's legendary smoothness, light action and super precise shifting. Once you ride a Plus derailleur, you'll never want to ride without it!
Shimano Saint Shadow + Rear Derailleur
$161.99
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.
Shimano ZEE Shadow + Rear Derailleur
$69.99
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.
Shimano Deore XT Shadow + Rear Derailleur (Mid Cage)
$97.99
Shimano's Deore XT Rear Derailleur uses cold-forged construction and cutting edge technology to deliver crisp shifting, real-world reliability, and trademark precision. Plus-type derailleurs use a lever-actuated clutch spring to prevent chain slap, reduce noise while on the trail, and improve chain engagement when riding over rough terrain. Sealed pulley bearings keep things spinning smoothly, and wide plate construction prevents the derailleur from getting clogged with mud and debris.
Shimano Deore XT Shadow Rear Derailleur Direct Mount (Long Cage)
$84.99
Shimano's Deore XT Rear Derailleur uses cold-forged construction and cutting edge technology to deliver crisp shifting, real-world reliability, and trademark precision. The Direct Mount uses less parts and provides a solid connection to your machine. The Shadow design tucks the rear derailleur closer to the wheel, which keeps it out of the way of roots and rocks as you're flying down the trail. A strong spring prevents chain slap, reducing noise while on the trail, and improving chain engagement when riding over rough terrain. Sealed pulley bearings keep things spinning smoothly, and wide plate construction prevents the derailleur from getting clogged with mud and debris.
Shimano 105 Rear Derailleur (Long Cage)
$89.99
Shimano's 105 Rear Derailleur delivers high-end function with upscale looks. With a body of light, durable cold-forged aluminum in Shimano's wide-pivot design with their light-action spring, rear shifting is practically effortless and always super smooth. The top pulley stays a uniform distance from each cassette cog ensuring that every shift resonates with the plunk of exact gear engagement.
Shimano 105 Rear Derailleur (Short Cage)
$54.99
Shimano's 105 Rear Derailleur delivers high-end function with upscale looks. With a body of light, durable cold-forged aluminum in Shimano's wide-pivot design with their light-action spring, rear shifting is practically effortless and always super smooth. The top pulley stays a uniform distance from each cassette cog ensuring that every shift resonates with the plunk of exact gear engagement.
Shimano Ultegra 11-Speed Di2 Rear Derailleur
$244.99
Shimano's electric-shifting 11-speed Ultegra Di2 Rear Derailleur is driven by battery power and a servo motor, so shifts are fast, precise, and perfect every time. It's made of light, tough cold-forged aluminum while mid-cage and short-cage models give you your choice of cassette. Since there aren't any cables or housing to stretch or fail, maintenance is dramatically reduced and shifting accuracy is unprecedented. This high-tech derailleur is even designed to move inward under impact to reduce the potential for damage in a crash.
Shimano Deore Shadow Rear Derailleur (Mid Cage)
$64.99
Shimano's Deore Shadow Rear Derailleur is ready for mountain bike action. 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.
Shimano Deore Shadow Rear Derailleur (Long Cage)
$64.99
Shimano's Deore Shadow Rear Derailleur is ready for mountain bike action. 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.
Shimano Alivio Rear Derailleur (9-speed)
$43.99
Shimano's Alivio Rear Derailleur is built to withstand the rigors of off-road riding, with a lightweight aluminum body and low-friction pivots for incredibly easy and smooth shifting. And, the Alivio features 11-tooth pulleys, which alternate chain-link contact reducing wear and smoothing pedaling.
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