.420 Chain 155mm 37T Front 420 17T Rear Sprocket For 50cc-125cc Dirt Mini Bikes
Rear Sprocket: 420 37T 155mm. 1 x 155mm 37T Front Sprocket. Wide Application: The 420 chain front rear sprocket kit is specially designed to fit 50cc to 125cc dirt bikes, mini bikes, ATVs and 4 wheel go karts.