Genuine Replacement Guide & Tension Pulley Wheels for Ultegra Di2 12-Speed
The Shimano Ultegra RD-R8150 Rear Mech Pulley Set is a genuine Shimano replacement pulley wheel kit designed specifically for the Ultegra RD-R8150 12-speed Di2 rear derailleur. Engineered to restore smooth, precise shifting performance, this replacement guide and tension pulley set ensures your electronic road drivetrain continues operating at peak efficiency.
Over time, derailleur pulley wheels naturally wear due to chain friction, contamination and high mileage. Replacing worn jockey wheels helps maintain accurate indexing, reduces drivetrain noise and improves overall shifting performance, especially under load. This authentic Shimano pulley set is manufactured to exact OE specifications, ensuring seamless compatibility with the Ultegra RD-R8150 rear derailleur.
The set includes both the upper guide pulley and lower tension pulley, finished in black and built for road cycling performance. As a genuine Shimano component, it guarantees correct tooth profiling, smooth rotation and long-term durability for high-performance road bikes equipped with Shimano Ultegra Di2 12-speed drivetrains.
Ideal for routine drivetrain maintenance or performance restoration, the Shimano Ultegra RD-R8150 pulley wheel set is an essential service part for riders who demand crisp, reliable electronic shifting.
This pulley set is compatible exclusively with the Shimano Ultegra RD-R8150 rear derailleur and includes one guide pulley and one tension pulley. Designed for road cycling use, it is supplied as a genuine Shimano replacement part in black.