Shimano GRX 817 Di2 1x11sp Rear DerailleurThis stunning rear mech is engineered to give you perfect shifting performance when riding on rough roads, gravel and muddy conditions. Ready to take on any challenge, the RX817 features an adjustable chain stabiliser which prevents chain slapping and drops. Shimano has also included a switch stabiliser which can be set to on/off to match the terrain conditions, which allows you more freedom to explore the unknown. Gravel-Tuned Rear ShiftingInspired by off-road groupsets, you'll enjoy its silent and uninterrupted rear shifting on harsher terrain conditions, where most common systems would fail. Whether you're planning a new adventure or joining friends after work for a ride out, this superb model's gravel-tuned clutch makes gear changing a breeze in any situation.Smooth and reliable, this rear derailleur features some of the finest technologies to keep you riding at the top of your game. Its revolutionary Di2 shifting system solves many of the challenges that mechanical systems face with the use of state-of-the-art electronics. This technology gives you instant, accurate and lightning-fast shifts every time you ride, at the push of a button. You'll also be able to change gear when under heavy load while climbing and accelerating for a top-level shifting experience.Features: Use: Gravel, Road Speed: 11 speed Link Bushings: 4 fluoric coated link bushings Low Sprocket Max: 42T Low Sprocket Min: 40T Top Sprocket Max: 11T Top Sprocket Min: 11T Total Capacity: 31T Spring Type: Shadow RD+Technologies: Di2: The revolutionary DI2 shifting system solves the challenges drivetrains present to the power-delivery equation in cycling. DI2 gives you instant, accurate, lighting-fast shifts the first and every time, at the push of a button. Even in the most extreme conditions, shifting is precise and controlled. You can change gear even under heavy load while climbing or accelerating. With DI2, you are in complete control. E Tube: The E-TUBE platform's “Plug & play” and D-FLY wireless connections make it easier than ever to check the system's status, and apply customized settings to DI2 and Shimano Steps components with a PC, tablet or smart phone. SEIS: The SEIS innovative shift technology is still based on the Shimano Index System (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. This electronic shifting system has been extensively tested over past two years by several professional riders in all conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at the same time. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting. Shadow RD+: Less distraction quiet drive train. Rear derailleur stabilizer reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device. A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Force eTap AXS 12 Speed Rear DerailleurFeaturing a tough aluminium cage construction and steel pulley bearings, this versatile rear derailleur is built to withstand the challenges that are associated with road and gravel riding. SRAM has also ensured that this model is AXS enabled, so riders can benefit from easy personalisation and control wherever their journey takes them. Another highlight is its Orbit chain management technology that's specifically designed to keep your drivetrain quiet and secure when travelling on rough roads and gravel. This makes it a great choice of upgrade for riders who want to explore further when the tarmac comes to an end.SRAM AXS Enabled Road Bike Rear DerailleurFast, precise rear shifting is now more attainable than ever. Whether you ride 2x or 1x, tarmac or gravel, the SRAM Force eTap AXS rear derailleur is up for the task. It features Orbit damper technology for quiet, secure chain management over rough roads and capitalizes on larger X-SYNC pulleys for improved durability and efficiency.- Orbit chain management technology keeps the drivetrain quiet and secure- Compatible with both 1x and 2x drivetrains- SRAM AXS enabled, allowing easy personalisation- 36t-max derailleur option is compatible with 10-36, 10-33, and 10-28 cassettes- 33t-max derailleur option is compatible with 10-26, 10-28, and 10-33 cassettes- Larger X-SYNC pulleys for increased durability and efficiency- Compatible with existing eTap batteriesFeatures: Cage Material: Aluminium Pulley Bearings Material: Steel Use: Road, Gravel Speed: 12 speed Max Tooth: Multiple options available to selectTechnologies: AXS Enabled: AXS is SRAM's bike component integration system that connects electronic bicycle components and software. Control: 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. Personalise: Wireless controls open the door to new levels of customisation. With AXS, you can personalise your component behavior to match your riding style and preferences. Turn on enhanced shifting modes, or reassign shifting actions. Measure: 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 analyses 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. X-Sync: SRAM X-SYNC chainrings 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 chainrings 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. Accept no imitation. Orbit: Orbit technology is an innovative form of derailleur motion control. It utilises silicon fluid as part of an elegant and ultra-lightweight damper system. Compared to a standard friction clutch system, Orbit technology places no additional resistance on the rear derailleur's spring when under slow or light movement. This means easier shifting and rear wheel removal. And while riding, the fluid damper reduces chain bounce. It's rock-solid reliability for both 1x and 2x systems.Manufacturer's Part Numbers: 00.7518.121.001 Grey Short Cage Max 33t 00.7518.136.000 Grey Medium Cage Max 36tBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Specifications:Speed (RD): 12s,Cable pull ratio: X-actuation,Cage (RD): n/a,Max tooth: 52,Color (RD): Lunar,Pulley bearings material: n/a,Cage material (RD): n/a.
Maximum ImpactWith its horizontal parallelogram design and pulley offset, X-Horizon keeps the chain gap constant across all 11 gears, giving fast, precise shifts. By limiting all movement to the horizontal axis, this design is faster, reduces shift force and eliminates ghost shifting. Roller Bearing Clutch technology reduces bounce and chain slap. Cage Lock technology makes wheel removal and installation easier than ever before. Paired with the XX1 shifter, the X-Horizon RD forms the backbone of X-Actuation technology for unbelievably smooth shifting action.Large upper pulley offset automatically adjusts chain gap,X-Horizon design reduces shift force and ghost shifting,12-tooth X-Sync pulley wheels,Type 2.1 technologies: Roller Bearing Clutch and Cage Lock,New silent pulley tooth design.
Shimano Dura-Ace R9250 Di2 12 Sp Fr DerailleurThe Dura-Ace R9250 Di2 Front Derailleur from Shimano is a small, durable, smooth shifting, and is compatible with Shimano 12-Speed Di2 electronic drivetrain systems. Ideal for the demands of competitive road racing, this Dura-Ace model ensures ultra-fast, precise and dependable gear shifting performance in all conditions.Despite its smaller, lighter design, the Dura-Ace FD-R9250 brings the fastest shifting front derailleur on the market. The fastest just got faster thanks to the Dura-Ace FD-R9250. Tipping the scales under 100 grams, the new design shifts 45% quicker than Shimano's FD-R9150, already the fastest on the market. And the frontal area of the FD-R9250 is also reduced to decrease aerodynamic drag. Shimano Di2 Electronic Drivetrain PerformanceThanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future. Shimano E-Tube CompatibleE-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. HYPERGLIDE+ OptimisedHYPERGLIDE+ dedicated chain technology delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain. Improved chain retention encourages more aggressive all-terrain riding and relieves chain-issue anxiety. Smoother drivetrain transmission and enhanced shifting performance sharpens riders' concentration and improves acceleration. Better chain engagement cuts abrasion, reduces maintenance, and lengthens the lifespan of the chain. Features: Fastest ever front shifting, 45% faster than Dura-Ace FD-R9150 Series: Dura-Ace R9200 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Shimano Groupset Smaller, sleeker, lighter Frontal area reduced by 33% Weight cut to 96g Top gear teeth capacity: 50-55T Weight: 96gA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Now simplified with a single derailleur cage length, the new 12-speed Shimano Ultegra R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12-speed Ultegra R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low sprockets.Ultegra Shadow design with Di2 technology, shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gearThe rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides ANT+ connection to 3rd party devises and replaces the handlebar junctionButton on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirementsSleek appearance with low profile Shadow design construction reduces risk of damage in a crashProgrammed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shiftThe 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 shiftsDerailleur contains a saver (fuse) function, where the inner structure is protected from strong impactsHigh tolerance cold forged aluminium link plates and body construction is extremely light and durableFour self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting12-speed E-tube Di2 compatibleWide gear ratio compatible up to 11-34T
CeramicSpeed OSPW System SRAM 10/11s Mechanical adds a competitive edge to your riding with smoother gear changes, watts saved and envy to all who see your bike. Entirely developed, designed and produced in Denmark by CeramicSpeed, the Oversized Pulley Wheel System for SRAM will improve your competitive advantage. The unique oversized design provides riders of this Oversized Pulley Wheel System with efficiency savings starting at 40% over stock SRAM derailleur pulley wheels. This specific SRAM Mechanical version of the Oversized Pulley Wheel System is only compatible with the following mechanical rear derailleurs; SRAM Red and SRAM Force - 10 and 11 speed. The OSPW System for SRAM mechanical derailleurs is compatible with both short cage & WiFli derailleur bodies. This system for SRAM features two oversized 17-tooth aluminium pulley wheels which are housed within a robust cage crafted from a compound of polyamide (PA) and carbon fibre. The OSPW System for SRAM fits up to 32-tooth cassettes. This revolutionary OSPW System is developed, produced and assembled by hand in Denmark. This plug-and-play product is the result of an in-depth development process and has been designed for optimal performance. Created to answer the need for less friction (as much as 60%), increased speed and a more efficient drivetrain. This OSPW System helps you ride any distance comfortably. The optimisation of your drivetrain with the new CeramicSpeed OSPW System delivers access to industry-leading efficiency. The use of high-quality materials means this system will outlast other commonly used pulley wheels on the market. Like all other products delivered by CeramicSpeed, this product has undergone a thorough testing program and is used by professional triathletes Tim Don and Tyler Butterfield. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men’s and Women’s Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users.
Despite its smaller, lighter design, the Dura-Ace FD-R9250 brings the fastest front shifting on the market. The fastest just got faster thanks to the Dura-Ace FD-R9250. Tipping the scales under 100 grams, the new design shifts 45% quicker than Shimano's FD-R9150, already the fastest on the market. And the frontal area of the FD-R9250 is also reduced to decrease aerodynamic drag. Shimano Di2 Electronic Drivetrain Performance Thanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world's best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future. Shimano E-Tube Compatible E-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. HYPERGLIDE+ Optimised HYPERGLIDE+ dedicated chain technology delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain. Improved chain retention encourages more aggressive all-terrain riding and relieves chain-issue anxiety. Smoother drivetrain transmission and enhanced shifting performance sharpens riders’ concentration and improves acceleration. Better chain engagement cuts abrasion, reduces maintenance, and lengthens the lifespan of the chain.
The SRAM GX Eagle AXS derailleur brings their cutting-edge AXS Wireless technology to an incredible new price point! Using the same features as the X01 and XX1 derailleurs in a cheaper package, GX Eagle AXS rewrites what to expect from a mid-tier drivetrain!Slick shifting wireless rear derailleurFor use with SRAM AXS Controllers 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.
SRAM Red 11 Speed Road Rear DerailleurSRAM Red 11 Speed Rear Derailleur has been designed to deliver the performance advantage you have come to expect from SRAM. The derailleur is equipped with SRAM's Exact Actuation technology, which ensures precise and efficient shifting.SRAM have paid special attention to the finer details, like adding a hollow titanium anchor bolt and the use of their AeroGlide pulleys. The result is that the chain runs through the rear derailleur smoother and quieter than ever before.Features: Material: Carbon Cages, Carbon inner links, aero designed Titanium hardware Exact Actuation shifting provides fast, and accurate shifts More clearance with 28t cassettes thanks to a longer B-knuckle Medium cage (WiFLi version) compatible up to 32T cassette New silent shifting with optimised Aeroglide Pulleys with ceramic bearings New spring-fixed barrel adjuster New chain pulley cage adds precise chain management Titanium pinch bolt keeps a low profile while minimising weight Speed: 11-Speed Recommended Group: SRAM Red 11-Speed Weight: 145gTechnologies: AeroGlide Pulleys: New tooth pulley design with a sound damping effect for a super efficient and silent ride experience. Bottom and top pulleys benefit from this feature 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). Exact Actuation helps to simplify and 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 WiFLi (medium cage only): SRAM's WiFLi technology accommodates a wider range of gears than a standard short-cage road derailleur. Compared to a triple chainring setup, it provides faster shifts and significant weight savingsBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The derailleur is designed with our Exact Actuation technology for precise, efficient shifting. We have paid special attention to the finer details, like adding a hollow titanium anchor bolt and even refining tooth geometry of the jockey wheel. The result is that the chain runs through the rear Derailleur smoother and quieter than ever before.
This special limited edition OSPW System features a moulded carbon fibre cage for the best balance of low weight and durability. It is developed specifically for the Campagnolo 12 speed EPS system and offers a three-spring tension setting that allows for optimal setup based on riding conditions. Limited Edition Campagnolo OSPW System Like every other CeramicSpeed Oversized Pulley Wheel System, this is developed, designed and handbuilt in Denmark. It is available with either CeramicSpeed Standard or Coated pulleys (choose option from the menu) with a lifetime CeramicSpeed warranty on the coated version and four years CeramicSpeed warranty on the standard version. The system is not compatible with 12 speed mechanical. Manufacturer's Part Numbers: 110206 Gold Option 1 Non Coated 110207 Gold Option 2 Coated