... ISO9001,OEM accept 3)Honda,Yamaha,Suzuki,Bajaj,Kawasaki High quality motorcycle front gear 1) Material:45# steel,16 # Mn,A3 ... 16T,17T..etc4) Rear gear:34T,35T,36T,37T,38T,57T..etc 5) Heat treatment:High frenquency quenching,Carburization6) ... for more information!If you are interested in any size of our product,please contact us without hesitation.Jenny13283294813 High quality motorcycle front gear ...