Description:

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.. 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.. Sprocket Size: This sprocket drive gear is 0.235in thick and has 17T. Center mounting holes are 1.18in apart and are compatible with 17mm engine countershafts.. Heat Treatment: Chain Front Rear Sprocket Set,To make the sprocket stronger, the sprockets are heat treated, which increases the strength of the sprocket, making it resistant to wear and tear very well.. Gear Curve Design: The sprockets also have an upgraded gear curve that helps reduce transmission friction, which helps extend the life of the chain.. Ideal Replacement: This kit is designed to replace the old one in different power sport vehicles using 420 chain sizes. The front sprocket is supplied with mounting screws..