The OSPW RS 5-Spoke for Shimano 9250/8150 is a high-performance oversized pulley wheel system designed to enhance drivetrain efficiency and durability. Compatible with Shimano Dura-Ace RD-9250 and Ultegra RD-8150 rear derailleurs, it features precision-engineered 5-spoke alloy pulley wheels with standard handbuilt CeramicSpeed bearings. This system reduces friction, ensures smooth shifting, and extends the lifespan of your drivetrain ideal for competitive cyclists seeking top-tier performance.

This specifications are from the information the brand releases and only apply to stock bicycles, build ups´ specifications will vary according to the components the buyer chooses.