Renthal 99+ Yamaha YZ 125-250/ YZF250-450 Rear Grooved Sprocket - Purple 520-50 Teeth

Made from high-strength, specially enhanced 7075-T6 aluminum that is 33% lighter than steel to further reduce weight and increase power transfer without sacrificing strength

• Special tooth profile that allows the chain to roll easily on and off the sprocket for longer wear, less noise and more power
• CNC-machined, feature a computer-aided ultra-light design to reduce unsprung weight