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.

The system is compatible up to a 28tooth cassette on most bikes depending on derailluer hanger.

In The Box:

– A complete 17-tooth OSPW System

– CeramicSpeed bearing oil in 15ml dropper bottle

s are extremely resistant to wear. This makes them a great choice if you ride in demanding conditions or just ride a lot. To give even greater protection and reduced friction, a super thin (2 microns) protective coating is applied to the bearing races. This further increases the resistance of the bearing to corrosion or damage from foreign objects.