Designed and developed entirely by CeramicSpeed, the Oversized Pulley Wheel System for Shimano RX800/805 provides the ultimate optimization of your bicycle's drivetrain. 
The 13-tooth upper and 19-tooth lower aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. 
This OSPW X System has a custom molded carbon fiber cage for lightweight and durability. The 4 tension spring settings allow for optimal drivetrain setup based on riding conditions. 
OSPW X is specifically designed for both road, gravel and cross riding and is platform proven at races like Paris Roubaix, Strada Bianche and CX World Cups. 


OSPW X for Shimano RX800/805 fits cassettes up to 36-tooth (11-36 range).
This OSPW system reduces friction 35-40% over stock pulley configuration. 
The oversized pulley wheels have 3-5 longer lifetime than the commonly used standard pulleys on the market. 
This product offers a 4 years warranty on the non-coated version and 6 years on the coated version. 

What's in the Box?

A complete 13/19-tooth OSPW System
CeramicSpeed Bearing Oil in 15ml dropper bottle

Be The First To Review This Product!

Help other FRF Sports users shop smarter by writing reviews for products you have purchased.

Write a product review