Genuine replacement Tension & Guide Jockey Wheel Set. This brilliant set features a smaller top wheel which acts as a guide to set your chain onto the cassette sprocket. Furthermore, its larger bottom wheel keeps your chain held with optimum tension.
Genuine replacement Tension & Guide Jockey Wheel Set. This brilliant set features a smaller top wheel which acts as a guide to set your chain onto the cassette sprocket. Furthermore, its larger bottom wheel keeps your chain held with optimum tension.
Suitable for use with Shimano Dura-Ace 9000/9070 rear derailleurs.
Suitable for use with Shimano Dura-Ace 9000/9070 rear derailleurs.
Ready for action, these high-quality components are an ideal choice of upgrade for your Shimano XTR rear derailleur. Easy to install, these allow you to benefit from their light action on every ride.
Ready for an unrivalled level of performance, this stunning set of Shimano Ultegra jockey wheels offers low friction and smooth movement. This makes it an ideal pair for riders who want to breathe new life back into your rear derailleur as you soar from the city streets to the countryside. Rear Derailleur Compatibility: RD-R8000-GS, RD-R8000-SS, RD-R8050-GS, RD-R8050-SS, RD-RX800-GS, RD-RX805-GS, RD-RX812, RD-M8000-GS, RD-M8000-SGS, RD-M8050-GS, RD-RX817
Ready for adventures, these superb components are an ideal choice of upgrade for your Shimano Tiagra rear derailleur. Easy to install, these allow you to benefit from their light action as you cruise from the city streets to the countryside with power and precision.
Ready for an unstoppable level of performance, this brilliant unit offers low friction and smooth-running performance. This makes it an ideal choice of replacement for breathing new life back into your rear mech.
Ready for action, these high-quality components are a perfect choice of upgrade for your Shimano 105 rear derailleur. Easy to install, these allow you to benefit from their light action as you cruise from the city streets to the countryside.
Genuine replacement Tension & Guide Jockey Wheel Set. This brilliant set features a smaller top wheel which acts as a guide to set your chain onto the cassette sprocket. Furthermore, its larger bottom wheel keeps your chain held with optimum tension.
Designed for the highest speed environments and modern tyre widths, the Ultegra C60 wheelset shares its all-carbon rim profile with Dura-Ace but employs a hub that is compatible with both 11 and 12-speed cassettes. For situations where aerodynamics is the priority, the new Ultegra R8170 C60 wheelset features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 11 and 12-speed cassettes. Centre-Lock Disc Rotor Mount The Centre Lock system makes an easy rotor installation possible with a spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency. D2 Aerodynamic Rim Profile Aerodynamic performance is affected by wind direction. To create the D2 rim, Shimano engineers considered both frontal and crosswinds, aiming to achieve optimal performance in real-world riding conditions. Extensive prototype testing, in the wind tunnel and on the road, proved that a wide rim shape with a deep tire bed performs best across a wide range of conditions. At yaw angles ranging from 0 to 15 degrees, the Shimano D2 rim profile reduces air drag better than others aero shape rims. This rim design also boosts lateral wheel stiffness and offers improved vertical compliance for increased control, comfort and durability on the road. Rear Wheel OPTBAL Spoke System The OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today’s wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally, high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel.
This wheel features boost-sized hub spacing for an extra-stiff performance from the spokes, giving you improved handling as you ride. Plus, disc-brake compatibility ensures you have consistent braking power, even in harsh conditions.