The Shadow design of the Shimano Dura-Ace Di2 rear derailleur means it sits under the chainstay and cassette to give a slimmer profile, which not only improves aerodynamics but offers faster wheel changes and helps to prevent damage in a crash. It also offers faster and more precise shifting than ever before. Shimano's 9150 groupset brings its Syncro-Shift technology to the road too. Syncro-Shift technology enables the Di2 front derailleur to read the position of your Shimano Dura-Ace R9150 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.
This mountain bike (MTB) Shimano Acera 8 speed rear derailleur is compatible with 7 and 8-Speed drivetrains. Its oversize 13-tooth tension and guide pulleys reduce noise and wear. Also, its extension spring and low-friction fluorine-coated link pivot bushing result in a light shifting action.
Thanks to the clutch system on the Shimano Deore M6000 rear derailleur, you can push yourself harder 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. Additional Features: 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 11-36T cassette (medium GS version only) Fluorine-coated link bushings for low-friction operation Technologies: 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.
With its light action design, Teflon coated bushings and efficient spring, this Shimano Altus 8 speed rear derailleur is perfect for leisure cycling and touring.
This particular mechanism is specifically designed for 3x9 gearing. It's easy to use light action makes it ideal for use on your commuter, touring or winter training bike.
The low-profile geometry and chain stabiliser ensure drivetrain security while the electronic wire transmission maintains consistent performance in all weather and trail conditions.
With its "Top Swing" design for positive shifting action and dual pull cable routing, the Shimano Acera M3000 front derailleur shifts smoothly and effortlessly and suits most bike frame's cable routing types.
The M7025 Direct Mount front mech features traditional down/top pull routing. It provides increased traction range for long-travel and active rear suspension bikes.
Featuring an extra wide pivot link to increase rigidity while reducing flex for improved shifting response.
This particular mechanism is specifically designed for 3x9 gearing. It's easy to use light action makes it ideal for use on your commuter, touring or winter training bike.
It features an extra wide pivot link to increase rigidity while reducing flex for improved shifting response.
Tough, aggressive and lightweight, Dyna-Sys11 11-speed SLX rear derailleur uses revolutionary features from XT and XTR at an affordable price point. Shimano's Direct Mount compatible Rear Derailleur system gives more space around the rear frame dropout resulting in easier rear wheel removal but also allows frame designers to shorten chain stays, increase axle sizes and move suspension pivots. Shadow Dyna-Sys11 11-speed rear derailleur delivers reliable and precise shifting with a stiff and lightweight open design. The Shadow features a super low profile design that reduces the risk of damage from trail side hazards. The shadow plus chain stabilizer tension can easily be adjusted externally via a hex key. Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining a more stable drive and shifting. This can be switched off to remove the wheel. Direct cable routing prevents snagging from any trailside hazards. Four fluorine-coated link pin bushings make this one of the slickest shifting derailleurs on the trails, whilst high rigidity wide outer links brace the pulley body to increase pivot joint rigidity resulting in a crisp shift.