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.
Shimano XTR M9100 12sp Rear DerailleurThe Shimano XTR M9100 Rear Derailleur features an elegant, refined and optimised design, which is aimed at providing maximum drivetrain efficiency over the most demanding terrain. Featuring oversized 13T pulley wheels, updated Shadow RD+ mechanism and is tailored specifically to provide maximum chain retention and shifting accuracy across the new Shimano 12-Speed drivetrain transmission system.Features: Material: Aluminium, Stainless Steel Use: MTB Speed: 12 speed Compatible Chain: HG 12-speed Low Sprocket Max/Min: M Option: 45T; L Option: 51T Top Sprocket Max/Min: M Option: 10T; L Option: 10T Total Capacity: M Option: 35T; L Option: 41T Pulley Teeth: 13T Pulley Bearings: Sealed Spring Type: Shimano Shadow RD+ Weight: M Option: 237g; L Option: 240gBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano 105 R7000 11 Speed Rear DerailleurBoasting the best of Shimano's Shadow technology, the 105 R7000 11 Speed Rear Derailleur offers unrivalled smooth shifting performance that stabilises the chainset movement and keeps the derailleur close to the chainstay. Incredibly reliable it offers precise drivetrain performance and a wide gear ratio ensuring a smooth shift performance that is durable, versatile and efficient. Features: Material: Aluminium Drivetrain Speed: 11-Speed Compatible Chain: HG-EV 11-Speed / HG-X11 Pulley Teeth: 11T Weight: Short Cage: 225g; Medium Cage 232g Cassette Capacities: Short Cage Option: Total Capacity: 35T Max Front Ratio Difference: 16T Low Sprocket: Max: 30T; Min: 25T Top Sprocket: Max: 14T; Min: 11T Maximum Cassette Size: 11-30T Medium Cage Option: Total Capacity: 39T Max Front Ratio Difference: 16T Low Sprocket: Max: 34T; Min: 28T Top Sprocket: Max: 12T; Min: 11T Maximum Cassette Size: 11-34TBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano 105 R7000 11 Speed Rear DerailleurBoasting the best of Shimano's Shadow technology, the 105 R7000 11 Speed Rear Derailleur offers unrivalled smooth shifting performance that stabilises the chainset movement and keeps the derailleur close to the chainstay. Incredibly reliable it offers precise drivetrain performance and a wide gear ratio ensuring a smooth shift performance that is durable, versatile and efficient. Features: Material: Aluminium Drivetrain Speed: 11-Speed Compatible Chain: HG-EV 11-Speed / HG-X11 Pulley Teeth: 11T Weight: Short Cage: 225g; Medium Cage 232g Cassette Capacities: Short Cage Option: Total Capacity: 35T Max Front Ratio Difference: 16T Low Sprocket: Max: 30T; Min: 25T Top Sprocket: Max: 14T; Min: 11T Maximum Cassette Size: 11-30T Medium Cage Option: Total Capacity: 39T Max Front Ratio Difference: 16T Low Sprocket: Max: 34T; Min: 28T Top Sprocket: Max: 12T; Min: 11T Maximum Cassette Size: 11-34TBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Ultegra R8000 11 Speed Rear DerailleurNow compatible with a wider range of cassette tooth count options, the Ultegra R8000 11 Speed Rear Derailleur delivers has been optimised by Shimano to offer fast and accurate gear shifts with minimal rider effort. In addition to the slick shifting, it also adopts the “Shadow” cage design to sit closer to your bike's frame. This improving its aerodynamics and protects it should you be unlucky enough to have a crash. Race-ready, it’s made in two different cage sizes to suit your cassette size preference.Key Features: Material: Alloy Colour: Grey Speed: 11-Speed Compatibility: All Shimano 2x11-Speed road drivetrainsCage Size: Separate short and medium cage size options Cassette Size Capacity: Short Cage: 11-25T to 11-30T; Medium Cage: 11-28T to 11-34T Total Capacity: Short Cage: 35T; Medium Cage: 39T Mounting: Standard hanger mount or direct mount Clutch Type: No Shadow Technology Low-profile design Precise and accurate shifting Manufacturer's Part Number: Short Cage: RD-R8000-SS; Medium Cage: RD-R8000-GS Weight: Short Cage: 200g; Medium Cage: 210gTechnologies: Shadow RD: Traditional derailleurs extend wider than the profile of your bike. With its low-profile design, Shadow RD (Reduced main derailleur body) is a more compact derailleur that fits closer to the frame, with more direct cable routing. Shadow RD maintains a consistent distance to the cassette for increased shift stability. The reduced body width creates a sleek and smooth appearance, ensuring less damage in a crashA 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.
Shimano Ultegra R8050 Di2 Rear Derailleur (GS)The Shimano Ultegra R8050 Di2 Rear Derailleur (GS) will help you maintain race concentration through intuitive shift control. The updated low-profile design of Shimano Shadow RD increases its shift stability and gives the rear derailleur a sleek and integrated appearance. Race endurance is guaranteed, through the optimised slant angle. The wide compatibility of two specific rear derailleurs (SS for cassettes 11-25T to 11-30T and GS 11-28T to 11-34T) will secure a smooth ride in even the highest and steepest mountain areas.Features: Speed: 11-Speed Compatibility: All Shimano Di2 E-Tube road 11-Speed drivetrains Model Number: RD-R8050 Series: Ultega Di2 Maximum Sprocket: 30T Minimum Sprocket: 11T Maximum Front Difference: 16T Weight: 242g (SS type), 249g (GS type)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.
Shimano Deore M6000 10sp Rear DerailleurShimano’s Deore M6000 MTB rear derailleur brings you features that are borrowed from its top-end XTR series, but not at a top-end price point. This means you’ll enjoy outstanding drivetrain performance as you’re attacking climbs and cranking up to speed on the flats.Excellent Chain RetentionThanks to its clutch system, this mech allows you to push yourself hard on the roughest trails, without worrying about chain slap or drop. It also delivers ultra-quick, quiet shifts and with its fluorine-coated bushings, shifting requires minimal rider effort.Reasons to Buy: Uses features borrowed from the top-end XTR series. Affordable.Outstanding drivetrain performance.Ultra-quick, quiet shifts.Features: Material: Main: Steel; Body: GFRP and Aluminium Speed: 10-Speed Mount: Standard (direct mount compatible) Compatibility: Shimano 10-speed flat bar shifters and 10-speed MTB cassettes Capacity: 41T (Medium GS version), 43 teeth (long SGS version) Maximum Large Sprocket: 42T (medium GS version), 36T (long SGS version) Maximum Chainring Size Difference: 10T (medium GS version), 22T (long SGS version) Recommended Chain: HG-X 10-Speed Derailleur Pulleys: 11T Clutch Type: Yes High-efficiency drivetrain for aggressive trail riding Light shifting effort Smooth and precise shifting Silent and stable for technical trail riding DYNA-SYS compatible Low profile design reduces the risk of damage Direct mount compatible Single tension spring prevents contact with the chainstay Direct cable routing prevents snagging Improved stability and chain retention longevity Compatible with wide range cassette (medium GS version only) Fluorine-coated link bushings for low-friction operation Application: Trail, All-Mountain, Cross Country Weight: 324g (GS medium cage)Manufacturer Reference Codes: Medium Cage (GS): RDM6000GS; Long Cage (SGS): RDM6000SGSTechnologies: Shadow+: This technology provides a less distracting, quiet drivetrain as the rear derailleur stabiliser reduces chain slap. A simple solution for chain drop, which is lighter and more efficient than roller type chain devices.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.
Shimano Sora R3000 9 Speed Rear DerailleurWith its durability and affordability, the Sora R3000 9 Speed Rear Mech is the perfect choice for winter or urban commuting bikes. Now with technology adopted from higher-level rear mechs, both beginners and enthusiasts will feel comfortable with the features that 9-speed Sora R3000 introduces.Features: Wide link design for increased rigidity and precise gear shifts 11-tooth pulleys for reduced pulley wear and chain noise Pulleys feature sintered alloy bushings for smooth-running performance Compatible with 9-speed drivetrains Cassette Compatibility: 9-speed Max Largest Sprocket: 32T (Short Cage), 34T (Medium Cage) Min Largest Sprocket: 25T (Short Cage), 28T (Medium Cage) Max Smallest Sprocket: 14T Min Smallest Sprocket: 11TA 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.
Shimano XT M8050 Di2 11sp Rear DerailleurThe Shimano XT Di2 M8050 11 Speed Rear Mech is designed specifically to work with a Shimano electronic Di2 drivetrain, the M8050 uses a medium cage that can allow you to run up to a 46t cassette.The low-profile geometry and chain stabiliser ensure drivetrain security while the electronic wire transmission maintains consistent performance in all weather and trail conditions.Features:Shifting motor responds instantly to rider inputE-Tube electric wire transmission guarantees consistent performance in all conditionsAccurate chain position in every gearProgrammable, multi-shift and Shimano Synchronised Shift functionsLow-profile design keeps derailleur safely away from trail obstaclesShimano Shadow RD+ chain stabilizer with easy adjustmentCompatible with CS-M8000 11-46t cassette (1X11) and 11-40/11-42 (2x11)Weight: 329gBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano SLX M7000 11sp Rear DerailleurWith a revised design and enhanced by technologies from Shimano's top-end models, the SLX M7000 rear mech performs better than ever. Ready to help you to attack the trails, it has the Shadow RD+ technology and an improved geometry to increase its stability. The adjustable "clutch" type stabiliser can be switched to be more rigid for chain better chain retention or switched for easier shifting.Features:Speed: 11 Speed Shifting Action: Shadow RD+ Mount Type: Direct attachment (Conventional)/Direct mount compatible (w/o bracket spec available) Maximum Sprocket: 42T (2x11-speed); 46T (1x11-speed) Minimum Sprocket: 11T Front Difference: MAX 10T Total Capacity: 41T Clutch Type: Yes Compatibility: All Shimano flat bar 11 speed shifters Shadow design with optimised, shallow slant angle, low profile design 20% reduced shift effort Chain stability improved Improved driving and shifting stability Adjustable clutch tension High efficiency pulleys 1x11 and 2x11 compatible Manufacturer's Reference Code: RDM700011GS Weight: 323g (approx)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.
Shimano Tiagra 4700 10 Speed Rear DerailleurSporting the new grey anodised finish, the Shimano Tiagra 4700 10 Speed Rear Derailleur (GS) carries the chain across the sprockets with ease. It delivers high-performance gear changes and operation all at a low price.Features: Speed: 10-Speed Wide link design increases rigidity and service life Advanced light action for low-friction shifting up or down the block Alloy body's and outer link leads to lower weight without compromising strength and durability 11 tooth pulleys for reduced pulley wear and chain noise Two fluorine-coated link pin bushings for low-friction performance Low Sprocket Maximum: Short Cage (SS): 28T(Front double), 25T Front triple); Medium Cage (GS): 34T (Front double) 32T (Front triple) Low Spocket Minimum: 28T (Front double) 25T (Front triple) Maximum Front Difference: 16T (Front double) 20T (Front triple) Total Capacity: Short Cage (SS): 33T; Medium Cage (GS): 41TA 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.
Shimano XT M8000 11 Speed Rear DerailleurEnjoy smooth, lightweight shifting with Shimano's M800 11 Speed Rear Derailleur. This component requires 20% less force to operate, yet it's even more durable and offers exceptional shifting performance. Simple to adjust and featuring enhanced chain stability, this mountain bike rear derailleur has you covered, no matter how tough the terrain.Features: Speed: 11-speed Compatibility: All Shimano 11 speed MTB shifters Shifting Action: Shadow RD+ Mount Type: Direct attachment (Conventional)/Direct mount compatible (No bracket specifications available)Maximum Sprocket: Low sprocket - 40/42T*, Top sprocket - 11TMinimum Sprocket: Low sprocket - 40T, Top sprocket -11TFront Difference: MAX 10TTotal Capacity: 39TLink Pin Bushings: 4 Clutch Type: Yes Shift cable comes with new hyper low-friction coating technologyEfficient pulley teeth designEasy-to-adjust chain stabiliser Weight: 271g (approx.)Manufacturer Reference Codes:Medium Cage: RDM8000GS; Long Cage: RDM8000SGS*42T for 1x11 onlyA 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.