Description:

Heat Treatment: To make the sprocket , the sprockets are heat treated, which increases the strength of the sprocket, making it resistant to wear and tear very well.. 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.. 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.. Gear Curve Design: The sprockets also have an upgraded gear curve that helps reduce transmission friction, which helps extend the life of the chain.. 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..