Developed and designed entirely by CeramicSpeed, the Oversized Pulley Wheel (OSPW) System for Shimano 9000/6700 provides the ultimate optimization of your bicycle's drivetrain.
This OSPW System features a set of 17-tooth aluminium Pulley Wheels, available in red and black, housed in a specially designed polyamide (PA) and carbon cage.
The upper and lower 17-tooth oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings.
The Oversized Pulley Wheel (OSPW) System is the product of choice by many of the world's leading cycling teams and triathletes.
This specific system is compatible with Ultegra 6700/6770/6800/6870 mechanical and Di2 rear derailleurs and Dura Ace 7900/7970/9000/9070 mechanical and Di2 rear derailleurs.
An updated version of the Oversized Pulley Wheel System for Shimano 9100/9150 and 8000 SS/8050 SS.
This new design has an integrated stop tower for easier mounting.
The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts over standard Shimano systems.
The OSPW System for Shimano 9100/9150 and 8000 SS/8050 SS is an industry leading product, chosen by many of the world's leading cycling teams and professional triathlete's.
Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings.
Please note: The OSPW System for 9100/9150 and 8000 SS/8050 SS is NOT compatible with Ultegra 8000-GS (long cage) nor with the clutch equipped Ultegra RD RX800 & RX805. Please see our Shimano 11 Speed Pulley Wheels for a compatible upgrade.
The Shimano 9100/8000 OSPW system is compatible up to a 32 tooth cassette for both Dura Ace & Ultegra derailluers