Renthal, Bakdrev, 520, 50, ORANGE, KTM 03-21 450 EXC-F/450 SX-F, 03-17 250 EXC, 18-21 250 EXC TPI/300 EXC TPI, 03-21 250 EXC-F/250 SX-F, 90 250 SX, 92-21 250 SX, 10-21 350 EXC-F/350 SX-F, 91-16 125 EXC, 92-21 125 SX, 17-19 125 XC-W/150 XC-W, 08 144 SX, 20

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