It is a rear sprocket. Factory Spec has a wide assortment of OEM replacement sprockets. The hardened steel ensures maximum durability. It is precision engineered to guarantee accurate fitment on each specific application. The steel sprockets last much longer than aluminum at a much lower price, giving you maximum value. Model # FS-1539 Features: A wide assortment of OEM replacement sprockets Hardened steel ensures maximum durability Precision engineered to guarantee accurate fitment on each specific application The steel sprockets last much longer than aluminum at a much lower price, giving you maximum value.
