Sunstar Rear Sprocket 42T Steel for Kawasaki ZX7 VN800 Suz GSXR750 Constructed of the highest quality 1045 high-carbon steel Exclusive heat treatment for added strength and wear resistance Most are zinc plated and have a baked on durable paint process for corrosion resistance The strongest, longest lasting steel replacement sprocket available Nearly all motorcycles come equipped from the factory with this sprocket