Ceramicspeed OSPW RS ALPHA Shift Cage for Shimano 9250/8150

CeramicSpeed ​​OSPW RS ALPHA – Shimano 9250/8150

Oversized Pulley Wheel System | Road and Triathlon

With the new OSPW RS ALPHA , CeramicSpeed ​​brings its renowned oversized pulley system into a new era, featuring an angular, modern design that complements the contemporary lines of Shimano Di2 groupsets.

This version features the all-new ALPHA Disc pulleys , designed to combine durability, quietness, and superior performance even in the most demanding conditions. Completing the upgrade is the patented ADR (Active Debris Remover) system that protects the bearings from mud and debris, extending the life and smoothness of the system.

Main features:

• Compatibility : Shimano 12v Di2 – Dura-Ace RD-9250 / Ultegra RD-8150

• Discipline : Road and Triathlon

• ALPHA Disc Pulleys :

  • Two-piece construction: aluminum disc + narrow-wide composite teeth

  • Maximum rigidity, silence and resistance to debris and impacts

  • Optimized for drainage and self-cleaning

• ADR technology (Active Debris Remover):

  • Sealed dust cover

  • Dynamic grooves for active debris ejection

  • Developed with professional teams and tested in extreme conditions

• Updated RS design :

  • Reinforced cage for greater strength and durability

  • Angular aesthetics integrated with modern bike and groupset designs

Technical specifications:

• SKU : 113490

• Net weight : 102 g

• Gross weight : 302 g

• Pulley material : Aluminum

• Derailleur Compatibility : Shimano RD-9250 / RD-8150

Package Contents:

• Complete CeramicSpeed ​​OSPW RS ALPHA system for Shimano 9250/8150

• ALPHA Disc Pulleys

• Reinforced RS cage

• Installation accessories

• Detailed instructions

For cyclists who want the most from every watt.

The OSPW RS ALPHA is the ultimate upgrade for Shimano Di2 drivetrains: advanced technology, unique style, race-ready performance.