Renthal, Bakdrev, 520, 49, BLÅ, Yamaha 03-21 WR450F, 03-23 YZ450F, 16-19 WR250, 01-21 WR250F, 08-20 WR250R, 99-23 YZ250, 01-23 YZ250F, 99-23 YZ125, 99-00 WR400F, 01-02 WR426F, 99 YZ400F, 00-02 YZ426F, FANTIC 22-23 XEF 450/XXF 450, 22-23 XX 250/XXF 250, 22

Twinring® Rear Chainwheels

The longest lasting most durable off-road sprocket you can buy developed over 5 years.

The unique flat face design keeps weight to a minimum and means the TwinRing's as narrow as a regular chainwheel.

Inner Ring is high strength Ultralight 7075 T6 Aluminium. Outer Ring is Electroless Nickel Coated steel

Outer is expanded at 200 °C and then fitted to inner, creating a permanent bond for the life of the sprocket