Developed and designed entirely by CeramicSpeed, the Oversized Pulley Wheel (OSPW) System for Shimano 9000/6800 provides the ultimate optimization of your bicycle's drivetrain.
This OSPW System features a set of 17-tooth aluminum Pulley Wheels housed in a specially designed polyamide (PA) and carbon cage.
The upper and lower 17-tooth oversized aluminum 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. It is not compatible with Shimano Dura-Ace 9100/9150 and Ultegra 8000 series rear derailleurs. For those rear derailleurs you will need a OSPW System for Shimano 9100 series.
The system is compatible with up to a 28-tooth cassette on most bikes, depending on derailleur hanger.
The typical overall power savings of the OSPW System for Shimano 9000/6800 is 30%-60% over a stock setup, and the oversized pulley wheels have a lifespan that is 3-5 times longer than the commonly used standard pulleys on the market.
In The Box:
- A complete 17-tooth OSPW System
- CeramicSpeed bearing oil in 15ml dropper bottle