Take your drivetrain performance to the next level with the CeramicSpeed OSPW RS Alpha for Shimano 9250/8150 – Black Team Edition. This premium oversized pulley wheel (OSPW) system is engineered to deliver smoother, more efficient shifting and reduced drivetrain friction, giving you a performance edge on every ride.

Precision Engineering for High-End Road Bikes
Designed specifically for Shimano’s top-tier Dura-Ace RD-9250 and Ultegra RD-8150 derailleurs, this OSPW RS Alpha system seamlessly integrates into modern road and triathlon bikes. The refined, angular design not only looks stunning on your bike but also enhances overall drivetrain dynamics.

Advanced Performance Features

• Active Debris Remover (ADR) – Unique patent-pending technology that actively prevents grit and contaminants from entering the bearing area, extending service life and maintaining smooth operation.

• ALPHA Disc Pulley Wheels – Featuring a robust two-piece design with composite narrow-wide tooth profiles for enhanced wear resistance and noise reduction, paired with a solid aluminium outer disc for strength and debris protection.

• Reinforced Cage Design – Upgraded cage construction improves strength and durability while maintaining lightweight performance.

• Smooth, Efficient Shifting – Optimises chain run and tension for faster, more responsive shifting under load.

Why Riders Choose OSPW RS Alpha
Whether you’re chasing marginal gains in a race or seeking crisp performance on long road rides, the CeramicSpeed OSPW RS Alpha system enhances drivetrain efficiency, reduces friction, and elevates ride quality – all with a sleek, premium aesthetic that fits high-end Shimano builds.

Specifications at a Glance

• Compatible with Shimano Dura-Ace 9250 and Ultegra 8150 derailleurs

• Premium aluminium and composite pulley construction

• Designed for road and triathlon bikes

Upgrade to a drivetrain component that delivers both performance and style — perfect for riders who demand more from every ride.