Countershaft Sprocket - 17 Tooth - Constructed of the same great quality and specifications that the Japanese OEMs have trusted and used since 1946 - Parkerizing surface treatment prohibits rust and corrosion, building resistance against those agents, resulting in a longer lasting, better appearance - Most race applications feature drilled weight-reduction holes (depends on application/tooth size) - Manufactured from case-hardened chromoly steel for unparalleled strength and durability