With its compact and smooth appearance, the Shimano Dura-Ace Di2 front derailleur delivers quick and smooth front shifting even under high pedalling torque. Plus, it has programmed chain guide trim settings and can be used in full or semi Shimano Synchronised Shift modes to bring you a personalised, top-level shifting experience. Shimano's 9150 groupset brings its Syncro-Shift technology to the road too. Syncro-Shift technology enables the Shimano Dura-Ace Di2 R9150 front derailleur to read the position of your Di2 rear derailleur and will automatically operate the front shift to position the gears in the most efficient gear and best chain line, so you'll never have to worry about front shifting and correction shifts again.
The Campagnolo Chorus EPS groupset takes a great deal of its DNA from its mechanical counterpart as it represents a more accessible version of Campagnolo performance, quality and attention to detail but delivers it in the laser-like precision package of an EPS drivetrain. The shifting performance of the Chorus EPS groupset is exactly the same as its lighter weight siblings, Record and Super Record, making for a transmission fit for professional racing. Shifting even under heavy load is no problem for the Chorus EPS transmission and mud, grime and debris have met their match against such powerful motors. The EPS rear derailleur is comprised mainly of a mechanical structure, derived from the mechanical gear and composed of a derailleur rod/parallelogram/derailleur cage, of a worm screw enabled by an electronic actuator. As with the derailleur, the electronic rear derailleur actuator is composed of a gear motor and a sensor, the built-in resolver, that reads its movements. The geometry of the parallelogram has been made more rigid and optimised to promote interaction with the electronic parts. The rear derailleur is also equipped with a play recovery system using a helicoidal spring that optimises stability and precision and keeps operation and performance constant over time, even after many kms have been covered. As with the mechanical rear derailleur, it is possible to optimise its position with respect to the frame and chain by acting on two adjusting screws: the screw that adjusts the mechanical end stop and the screw that adjusts the distance between the upper pulley and sprockets. By using these screws it is possible to optimise the installation of the rear derailleur and increase the precision of its operation. DTI: Digital Tech Intelligence is housed inside the Power Unit and it continuously monitors the signals that arrive from all the EPS components, thus managing their operation. Multi-Shifting There are no longer any limits to multi-shifting and the choice is at the fingertips of the cyclist. Ride back home The uncoupling mechanism of the rear derailleur is useful if the battery runs out ""on the road"", allowing you to manually ""uncouple"" the rear derailleur to position it on which ever sprocket you require. Waterproof In order to achieve the IP67 classification, all the electronic components of the EPS system underwent a series of tests, which proved their ability to function perfectly under one meter of water for at least 30 minutes.
The SRAM Red Series was created to blur the boundaries between man and machine. Powerful and pure, light and quick, SRAM Red epitomises true advancement, leveraging design and innovation with zero restraint on performance. Carbon Cages, Carbon Inner Links, Titanium HardwareMore Clearance with 28t Cassettes Thanks to a Longer B-knuckleSilent Shifting with Optimized AeroGlide Pulleys and Ceramic BearingsChain Pulley Cage Adds Precise Chain ManagementTitanium pinch bolt keeps a low profile while minimizing weight The SRAM Red Short Cage Rear Derailleur was designed using SRAM s Exact Actuation Technology for precise shifting, and features carbon cages, carbon inner links and titanium hardware. Thanks to a larger B-Knuckle the derailleur offers greater clearance with 28T cassettes, the barrel adjuster is spring fixed, the chain pulley cage ensures precise chain management and the titanium pinch bolt keeps a low profile whilst minimising weight.
Campagnolo Chorus HO 11 Speed Road Rear DerailleurCampagnolo's Chorus HO Rear Mech features a carbon fibre outer plate and jockey wheel cage and offers you shifting performance that's comparable to their higher spec Record and Super Record models. One of the stand-out features is the “Embrace” technology, which ensures an ultra-efficient chain and cassette interface, secure chain grip, increased durability, and excellent power transfer.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: Material: Anodised Forged Aluminium (upper body) Carbon Fibre (outer plate and jockey wheel cage) Multi-shifting technology allows you to upshift up to 3 gears at a time Embrace technology for better drivetrain efficiency Parallelogram with 11x geometry Lightened special rubber pulleysMaximum Cassette Capacity: 11-29T (short cage), 11-32T (medium cage) Weight: 183g Technologies:Ultra-Shift: This control system by Campagnolo is regarded by everyone as the fastest and most precise out there. With this system, you can move the chain simultaneously up 3 sprockets and then 5 down. Furthermore, the lever design allows for an ever lighter shifting, whilst maintaining the "click" sound featured on all Campagnolo controls.Embrace Technology: This technology increases the number of sprocket teeth wrapped by the chain, allowing smooth, fast, and prompt shifting. Proven to optimise the functionality of the rear derailleur even when using extreme cassettes such as 11-32T. Buy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Big freshen up for the Killabee K4! Total have listened and brought back the integrated chain tensioners as well as adding the DBS brake system. Featuring a progressive 75.75° head tube angle this frame is super responsive. Ovalised chain stays have been added to keep tyre clearance suitable for up to 2.4” tyres and for extra dent resisitance. This frame is ready to take your riding to the next level. ###section### Product Specs MATERIAL: Full Multi Butted Sanko 4130 Chromoly HEAD TUBE ANGLE: 75.75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 12.65” - 12.95” BB HEIGHT: 11.6" WHEEL SIZE: 20" STANDOVER HEIGHT: 7.7" DROPOUT SIZE: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Removable WEIGHT: TBC ###section### Product Highlights Responsive Geometry with Short Backend and Steep Headtube Great all round frame for all types of riding High-quality Chromoly construction Seamless Japanese Sanko Tubing Removable brake hardware ###shogun-image-section###
The top of the line SRAM XX1 Type 2.1 rear derailleur features small improvements over the previous model, to give you smooth, precise shifting and ultra-reliable performance with your SRAM 1x11 drivetrain. With its "horizontal parallelogram" design and pulley offset, the SRAM XX1 Type 2.1 11-speed Rear Derailleur keeps the chain gap constant across all 11 gears, providing 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, while Cage Lock technology makes wheel removal and installation easier than ever before. Paired with the XX1 shifter, the X-Horizon rear derailleur forms the backbone of X-Actuation technology for unbelievably smooth shifting action.
The Shimano 105 Di2 RD-R7150 rear derailleur is quite possibly the biggest advancement in 105 technology since the range was introduced. In its mechanical form, 105 offered excellent shifting performance; the introduction of electronic gear changing offers even quicker and smoother shifting than ever. With a 105 Di2 rear derailleur at your disposal, you’ll have access to lightning-quick, effortless gear changes at the click of a button. What Big Teeth You Have: The 105 R7150 rear derailleur comes with a greater range of gear capacity. Coming as 12-speed and capable of handling a 36T cassette, it’s the perfect rear mech for tackling those big days out on the bike. Pair it with a compact chainset up front and there’ll be very few mountains you won’t be able to tackle. Such a broad range of gears will have you confidently tackling steep climbs, taking on bikepacking adventures, or getting stuck into fast bunch rides. From The Shadow: Similarly to Shimano’s top-tier lines—Dura-Ace and Ultegra—and drawing on the company’s mountain bike ranges, the 105 Di2 rear derailleur uses the “shadow” design. This design is intended to increase stability when shifting on rough roads and under load. With such technology you can be confident when changing gears on those steep inclines and when caught out in a race. What’s more, the shape created from this design is sleek and compact, reducing the risk of damage in the event of crash and increasing your aerodynamic advantage. Wireless Indicators: Though the 105 Di2 rear derailleur is compact in its design, it’s still chocked full of technological wizardry. It includes an integrated wireless unit that, in conjunction with the shifters, offers seamless gear changes free of cables. Handily, the derailleur features LED status indicators to let you know: battery status, when the unit is paired, and when it is in adjustment mode. Product Features: 12-speed Di2, electronic gear changes LED Status Indicator, to signal battery status, pairing, adjust mode Weight: 302g Max low gear: 36T Max high gear: 11T
A new level of performance for Shimano 12-speed road rear derailleurs. Wide 36T-compatible 12-speed Di2 rear derailleur. Receiving the wireless shifting signal from the shift lever, the Shimano 105 rear derailleur completes a shift in the blink of an eye with its high-performance motor and optimised link structure. This is the hub of the Di2 system, with the charging port, indicator LEDs, adjustment switches and more integrated into a compact package. A low-profile design reduces damage from contact and falls.105 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 to the battery 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 11-36T
This superb 12 speed crankset is specially designed for MTB use as it delivers consistent performance all across the mountain. It features stunning Troy Lee Designs custom painted graphics which represent how amazing it performs on the trails. What’s most impressive is its lightweight carbon fibre crank arm construction with an aluminium chainring which means you won’t have to worry about any excess weight holding you back from a thrilling off-road riding experience. Technologies: DUB Technology: The relationship between bottom bracket spindle and bearing is the core of DUB™ technology. It’s where stiffness meets durability. SRAM took it a step beyond conventional thinking and made everything simpler, by better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this clear system approach that equals better drivetrain performance.
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.
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.