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Campagnolo Super Record 12 Speed Rear Derailleur - Carbon - 11.34t}, Carbon
  • £399.99

Campagnolo Super Record 12 Speed Rear DerailleurThe 12-Speed Campagnolo Super Record Rear Derailleur is the heart and soul of the Super record 12-Speed drivetrain. Super Record components are designed for competitions and to provide the optimum performance required to win at the top level. This new model still provides professional racers with the certainty of fast and exceptionally accurate shifting, even under load. However, you don't have to be a professional to take advantage of Campagnolo's best performance features, the significant increase in shifting will be noticeable to any road cyclist.More Efficient, Better Power Transfer, Smoother ShiftingThe revised shape of the external components of the Super Record 12-Speed rear derailleur allows it to move efficiently to give maximum performance at any angle across any cassette ratio. The design of the cage keeps the chain closer to the cassette to ensure better power transfer, a more positive drive, whilst perfectly following the curve of the cassette sprockets. This better chain/sprocket interface also gives greater durability of components and is silent during use.Features:  ULTRA-LIGHT main derailleur body  Stiffer, less weight  Optimised trajectory curve, improved shifting  Close contact with each sprocket  3D-Embrace Technology  Inner mechanism embraces more teeth per sprocket  Greater shifting retention and efficiency  Unique 72.5mm Cage, One Size Fits All (11-29 and 11-32T cassettes)  Larger 12-Tooth pulley design, greater contact and cassette versatility  Increased adjustability, durability and rider safety  Massive performance increase and just 3 grams difference, compared to the previous  model  Weight: 181gBuy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano Dura Ace Di2 R9250 12 Speed braze-on Front Derailleur
  • £399.99

Elite road racers demand reliable and precise shifting, 12-speed Dura-Ace R9150 delivers with its super-lightweight and compact designSynchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur,The Di2 front derailleur's operation is pioneering, smooth shifting is guaranteed thanks to wireless communication with the gear levers. What's more, shifting the rear derailleur automatically trims the front derailleur,The biggest difference you will notice is just how much quicker and effortlessly smoother shifting on the front chainrings is, even under load,The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts,The front derailleur also trims automatically; the cage moves in response to the position of the rear derailleur on the cassette to ensure no chain rub and a quiet unobtrusive ride, enabling you to concentrate on the road ahead,Braze-on fit as standard; if your bike does not have a braze-on mount seat tube adapters are available,12-speed E-tube SD300 wire compatible.

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Campagnolo Super Record 12 Speed Rear Derailleur
  • £399.99

The new Super Record 12X2 Speed rear derailleur: pure technology. Functionality combines with the highest quality materials and exceptional weight to generate unparalleled performance.A connector rod has been added to the new Super Record 12X2 Speed rear derailleur, as well as a unidirectional front rocker arm in carbon fibre that further reduces the weight of the component, lends uniformity to the aesthetics, and magnifies the incredible performance of Campagnolo's signature component.The new Super Record 12X2 Speed rear derailleur can be described as a sculpture with an innovative shape that uses 3D Embrace technology to better cradle the smaller sprockets. The technology serves a double purpose: it enables the chain to maintain optimum traction at all times, thus increasing the speed, power and precision of shifting; it also ensures that the rear derailleur is always at an ideal distance from the sprockets. The rocker arm was optimised to interface with sprockets that have from 11 to 34 teeth, thus requiring only one version for all of the sprocket packs available. The upper body of the new Super Record 12X2 Speed rear derailleur is made of techno-polymer plastic reinforced with carbon fibre, which contributes to the robustness and lightness of the component, whilst the titanium stop screw ensures a reduction in weight and matches even better with the technical and aesthetic aspects of the component. Technologies: Upper body in ULTRA-LIGHT technopolymer reinforced with UD Carbon Fibre3D Embrace Technology: Movement of the rear derailleur is designed to make the chain embrace more teeth per sprocket to guarantee maximum traction,Optimised trajectory: Movement of the rear derailleur means that the upper pulley wheel is at constant distance to the sprocket in use, 12-tooth pulley wheels: Perfect for cassettes that have a wide range of teeth,Optimised return spring: This guarantees constant chain tension regardless of road vibration,Versatile Hanger System: Standard or Direct mount hanger, perfect compatibility of rear derailleur with any frame: disc or rim, direct mount or classic hanger,. Key Features:Constant precision: 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,Easy wheel replacement: The rear derailleur is positioned further back, making it easier to slide the wheel out and replace it,Removable pivot on the upper body: Perfect functionality with standard drop-out (with pivot) and direct-mount (without pivot),Weight: 181g.

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Campagnolo Super Record Rear Derailleur (12 Speed) Rear Derailleurs
  • £399.99

The Super Record Rear Derailleur (12 Speed) from Campagnolo is an ultra-light, fast-shifting workhorse that will have you soaring out on the road effortlessly. Made from seriously light and hard-wearing construction for years of long-lasting use in even the harshest road conditions. Equipped with a 12-tooth pulley design for even greater contact and cassette versatility than ever before, you can be assured that this derailleur will keep your performance at its peak. With a newly improved cage design, the derailleur is closer to your cassette, making shifting effortless. The increased adjustability means the Super Record will give you maximum performance at any angle and across any cassette ratio for better durability and safety. A great upgrade for competing or if you want to take your riding up a notch while out on the road. The Campagnolo Super Record Rear Derailleur (12 Speed) is the perfect choice for keeping you at the top of your game, ride after ride.

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CeramicSpeed OSPW Campagnolo Coated Rear Derailleur Spares
  • £401.19
  • RRP £471.99
  • Saving you £15

This version of the Over Sized Pulley Wheel system features coated bearings, which means the bearings have been treated with a special, thin layer coating system. This coating ensures prolonged bearing life, lower friction and means the bearing race is exceptionally resistant to corrosion. This Pulley Wheel System is designed to enhance drivetrain performance and increase the efficiency of power transfer from rider to the road. Created using the highest quality materials and ensures that performance from the already exceptional Campagnolo rear derailleurs is increased even further, pushing you even further ahead of the competition. This model is not compatible with Campagnolo 12-Speed drivetrains at this time. Please note: Many Campagnolo rear derailleur designs (including all EPS models) do not feature a B-limit adjustment screw. It may not be possible to use a 32 tooth cassette with this system due to how some bike dropouts are designed. Compatible with:  Record mechanical Record EPS Super Record mechanical Super Record EPS Potenza mechanical Chorus

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SRAM Red Etap AXS Front Derailleur
  • £409.00

The SRAM RED eTap AXS™ front derailleur leverages our advancements with X-Range™ gearing. The derailleur design carves out space for wide rear-tire clearance, making it a perfect fit for modern riding. And the shifting is quick and precise.Key Features:AXS™ enabled for easy personalization,Elegant and streamlined form for more rear-tire clearance,SRAM Yaw™ trimless cage technology with an optimized cage profile for new SRAM RED® front chainring combinations,The most responsive, quick, and precise front shifting to date,Compatible with existing eTap® batteries,Battery sold separately.Specifications:Speed (FD): 2x12,Compat - Chainring (FD): Road-Yaw,Mounting type (FD): Braze-on,Cable routing: Wireless,Color (FD): Black,Chainstay Angle: 61-66 degrees,Clamp size (FD): 31.8mm|34.9mm.

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SRAM Red eTap 11 Speed Rear Mech Rear Derailleurs
  • £418.99
  • RRP £523.00
  • Saving you £20

SRAM’s own wireless technology provides a secure connection and the removable battery has a 1000km range. So, if you forget to top up your battery and it runs low miles from home, simply swap it over with the front derailleur's battery to get back on the road with a full cassette range. It also benefits from the same quality construction of the mechanical SRAM Red version, featuring ceramic pulley bearings, a carbon cage, and an anodised alloy body. Technologies: AIREA™ - Utilizing 128-bit encryption, eTap® shift signals are transmitted and received in accordance with SRAM’s proprietary wireless protocol known as AIREA. Each time an eTap groupset is paired, a new encryption code is generated and assigned to the components in this group to ensure complete shifting security. eTAP - All of the underlying tech in the SRAM RED® eTap groupset such as wireless shifting, advanced battery power management and mechatronics technologies are all meant to serve one ultimate purpose, to facilitate the most intuitive and consistent shifting available. This shift logic is called eTap. Right lever makes it harder, left lever makes it easier, both levers shift the front derailleur. Simple, unmistakable, and intuitive. Exact Actuation: When SRAM launched their road technology from scratch they reapplied their MTB proven SRAM 1:1 actuation ratio (shifter cable travel: derailleur movement) for 10 speed rear shifting. EA helps to simplify/stabilise the uneasy act of balancing rear derailleur hanger design, tight cog spacing and exact cable tension. The result: the easiest index shifting system to set up and it stays that way.

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SRAM X01 Eagle AXS Rear Derailleur - Red
  • £435.00
  • RRP £512.00
  • Saving you £15

The SRAM X01 Eagle AXS derailleur carries over many of the features of the mechanical X01 derailleur, such as the useful Cage Lock and Type 3 Roller Bearing Clutch. Added to this are several all new technologies that help improve performance and durability. Slick shifting wireless rear derailleurFor use with SRAM AXS Controller and 12-speed Eagle drivetrains (Sold separately)Type 3 Clutch provides impeccable chain retentionOverload Clutch prevents damage from crashes and rock strikesBattery not included - sold separatelyControlled by SRAM's new AXS technology, the derailleur offers crisp, instantaneous shifting and a super-clean cable free design, taking mere seconds to install and sync with the AXS controller using the AXS app. Further improving shifting and durability is the Overload Clutch. This works to protect the rear derailleur in case of a direct strike to it from a trail-side obstacle or crash, protecting the derailleur and keeping it shifting smoothly. The pulley cage is also 10mm shorter for improved clearance, further reducing the risk of damage. The system is completely water and dust proof to IP67K, so the elements are shrugged off with ease. The battery (sold separately) is shared with other AXS and eTap components, so can be swapped if needed and lasts between 20-30 hours of riding between charges.

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SRAM X01 Eagle AXS 12 Speed Rear Derailleur
  • £460.80
  • RRP £512.00
  • Saving you £10

It’s an all-new derailleur that’s specifically designed and optimized to be motor-driven instead of cable-actuated. AXS powered components enable customization and scale to an individual rider’s liking via the AXS App. It features a shorter cage for 10mm more ground clearance with more chain wrap on the cassette to sit slightly further forward and further inboard from mechanical Eagle.  The Eagle AXS derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch. In the event of an impact the motor gearbox disengages giving the derailleur freedom to move and instantly returns back to its position for a seamless experience for the rider. The system is tested to IP69K water and dust proofing standard for creek crossings mud splatterings and the resulting post-ride pressure washings. Enduro focus and trail ready Forged aluminum cage Stainless hardware Eagle technology Overload Clutch protection AXS enabled componentry software that makes it possible to both program and personalize new SRAM and RockShox components System is completely water and dust proof to IP69K Battery sold separately SPECIFICATIONSSpeed (RD): 12sMax tooth: 52Color (RD): Black RedPulley bearings material: SteelCage material (RD): Aluminum

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Campagnolo Super Record HO 11 Speed Rear Derailleur Rear Derailleurs
  • £462.99
  • RRP £509.99
  • Saving you £9

Super Record components have always gone hand-in-hand with competitions and wins, and still today represents for professional racers the certainty of fast and extremely precise shifting, even under load. You don't have to be a pro to take advantage of Campagnolo's best performance features, the fun is for all. Ultra Efficient The revised shape of the external components of the Super Record HO allows it to move efficiently to give maximum performance at any angle. The design of the cage keeps the chain closer to the cassette to ensure better power transfer, a more positive drive, whilst perfectly following the curve of the sprockets. This better chain/sprocket interface also gives greater durability of components. Disc Brake Frame Specific This HO (hydraulically optimised) version is specifically designed for use on disc brake frames that feature the wider 12x142mm rear dropout spacing. It features an adapted mounting link for easier thru axle removal and larger teeth on the upper pulley for precise shifting at more extreme chainlines.

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Campagnolo Super Record HO 11sp Rear Derailleur - Black - Medium}, Black
  • £462.99
  • RRP £509.99
  • Saving you £9

Campagnolo Super Record HO 11sp Rear DerailleurCampagnolo's Super Record HO Rear Mech is the heart and soul of the Record 11-Speed drivetrain. Super Record components have always gone hand-in-hand with competitions and wins, and still today represents for professional racers the certainty of fast and extremely precise shifting, even under load. You don't have to be a pro to take advantage of Campagnolo's best performance features, the fun is for all.Ultra-efficientThe revised shape of the external components of the Super Record HO allows it to move efficiently to give maximum performance at any angle. The design of the cage keeps the chain closer to the cassette to ensure better power transfer, a more positive drive, whilst perfectly following the curve of the sprockets. This better chain/sprocket interface also gives greater durability of components.Disc Brake Frame SpecificThis HO (hydraulically optimised) version is specifically designed for use on disc brake frames that feature the wider 12x142mm rear dropout spacing. It features an adapted mounting link for easier thru axle removal and larger teeth on the upper pulley for precise shifting at more extreme chainlines.Features:Aluminium fixing boltCarbon fibre upper and lower bodyCarbon fibre cage plateCarbon fibre parallelogramExclusive Ultra-Shift™ geometryCeramic ball bearingsPulley cage aluminium fixing boltsSpeed: 11-SpeedBuy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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SRAM X01 Eagle AXS 12 Sp Rear Derailleur Rear Derailleurs
  • £485.00

This off-road rear mech can be used for MTB or enduro riding as it features a hard-wearing forged aluminium and stainless-steel construction, that's more than capable of handling all the abuse that's associated with long days on the trails. SRAM has packed this model with its finest technologies such as Overload Clutch protection, where in the event of an impact, the motor gearbox disengages, giving the derailleur freedom to move, and instantly returns back to its position for a seamless experience for the rider. SRAM has also equipped this trail-ready rear mech with its renowned AXS technology. AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the bike of your dreams. Part of the top-level Eagle series, this MTB rear derailleur is a lighter, simpler, more durable, and easier to use model. Eagle features 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, while is equal to 2x11 drivetrains.  - Eagle technology - Overload Clutch protection - AXS enabled componentry software that makes it possible to both program and personalise SRAM and RockShox components - System is completely water and dust proof to IP69K - Battery sold separately It’s a MTB derailleur that’s specifically designed and optimized to be motor-driven instead of cable-actuated. AXS powered components enable customization and scale to an individual rider’s liking via the AXS App. It features a shorter cage for 10mm more ground clearance, with more chain wrap on the cassette to sit slightly further forward, and further inboard from mechanical Eagle. The Eagle AXS derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch. In the event of an impact, the motor gearbox disengages, giving the derailleur freedom to move, and instantly returns back to its position for a seamless experience for the rider. The system is tested to IP69K water and dust proofing standard for creek crossings, mud splatterings and the resulting post-ride pressure washings. Technologies: AXS: When SRAM launched the original RED eTap in 2015, one of its most exciting features was that it was wireless. Now, we’ve taken eTap wireless to the next level with AXS. AXS is SRAM’s bike component integration system that connects electronic bicycle components and software.  AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the party bike of your dreams. Wireless controls open the door to new levels of customization. With AXS, you can personalize your component behavior to match your riding style and preferences. Turn on enhanced shifting modes, or reassign shifting actions. The AXP Mobile App and AXS Web allow you to monitor your bike’s performance and readiness. It’s an easy way to keep tabs on your battery levels—including the CR2032 batteries in eTap shift levers—and keep AXS component firmware up-to-date. AXS Web analyzes your ride files specific to shifting, gear use, power zones, and tyre pressure, so that you can quickly and easily learn more about how your bike is working for you and consider adjustments. Cage Lock: With Cage Lock technology in the rear derailleur, wheel removal and installation - as well as chain installation - becomes faster and simpler. Just push the cage forward to create slack and lock it into place. Overload Clutch Protection: The Eagle AXS™ derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch. In the event of an impact, the motor gearbox disengages, giving the derailleur freedom to move, and instantly returns back to its position for a seamless experience for the rider. The primary purpose of the Overload Clutch is to protect the derailleur shift motor, but it serves to protect your derailleur and derailleur hanger from damage as a by-product. A very helpful by-product. X-Horizon: This rear derailleur's "straight parallelogram" design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain hap across all gears. X-Sync: SRAM X-Sync™ 1X chain rings provide the highest level of performance and durability. The SRAM X-SYNC™ tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC™ chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC™ rings are an integral part of the SRAM 1X™ drivetrain. Eagle: Eagle technology represents our newest 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, while is equal to 2x11 drivetrains.

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