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.
This 24mm mid-depth rim offers a balanced aerodynamic performance, with a reliably smooth performance when climbing uphill thanks to its 23.2mm width.
The hubs on the Shimano Ultegra RS700 C30 wheels feature high-quality contact seals and the legendary, highly adjustable Shimano cup and cone bearings that provide silky smooth rolling prowess and consistent performance. The rear wheel has been laced together using the Shimano OPTBAL 2:1 spoke lacing pattern. This means the drive side has twice as many spokes as the non-drive side and dramatically increases stiffness and rigidity, which is very noticeable when sprinting and powering out the watts.
The 29.6mm width of the rim ensures a stiff controlled performance no matter the conditions. Plus, the disc brake compatibility ensures gives you a precise stopping power that's perfect for retaining speed on the descent.
Designed for smooth operation, these Shimano Ultegra jockey wheels are developed for use with your Shimano 6800 or 6870 rear derailleur. Ideal for maintaining low friction, these are an ideal choice of upgrade for replacing your road bike's worn-out existing pulley wheels.
Coming equipped with one tension pulley and one guide pulley, these jockey wheels are an excellent upgrade for keeping your drivetrain running smoothly and friction-free. Manufacturer Part Numbers: Short Cage: Y5YE98080 Medium Cage: Y5YE98090
Easy to install, these jockey wheels are ideal for riders who want to breathe new life into their rear mech. Perfect for maintaining low friction, these are a perfect choice of upgrade for ensuring your rear mech runs smoothly.
Ready for action, these high-quality jockey wheels are a perfect choice of upgrade for your Shimano Deore rear derailleur. Easy to install, these allow you to benefit from their light action as you cruise from the city streets to the countryside.
Constructed using tough and trusted aluminium, this powerful and robust pair of Shimano RS171 wheels ensures a steady and fast roll from trail to trail, using the rims 24.6mm width and 19mm height to maintain brilliant balance on a variety of terrains. Equipped with 28 spokes on each wheel, this superb set delivers excellent structural integrity as you take on the toughest cyclocross (CX) courses. The spokes are laced through a pair of aluminium hubs, complete with contact seals for a low maintenance and high-efficiency performance on every ride. The rear hub features Shimano 8/9/10 and 11 speed compatibility, giving you the thrust and pace required to climb steep hills and sprint through open sections. Plus, centre lock disc brake compatibility also adds phenomenal stopping power and control to the durable and dependable Shimano RS171 Disc Wheelset.
Coming equipped with one tension pulley and one guide pulley, these jockey wheels are a superb upgrade for keeping your drivetrain running smoothly and friction-free.