Durable, lightweight front sprockets that are designed specifically to outlast and out-perform the competition. All of Pro Taper's sprockets are available for most make and model dirtbikes. Precision broached and machined to the strictest standards. Case-hardened chromoly steel. Lightening holes keep sprocket lightweight. Self-cleaning mud grooves prevent dirt build up. Special coating helps retain strength and aids in wear resistance. Etched teeth number for easy identification.