Primary Drive Front Sprockets are made to meet or exceed O.E.M. specifications. Using high-grade hardened steel, Primary Drive brand front ATV and motorcycle sprockets offer durability and value. Primary Drive Front Sprockets are precision machined for a perfect fit.-Durable replacement front sprocket for motorcycles and ATV's.-Manufactured to O.E.M. specs using high-grade hardened steel.-Precision machined for a perfect fit.-Sprockets larger than O.E.M. sizing may require removal of case savers.