Renthal - Twinring Rear Sprocket Yamaha YZ, YZF 125-450 (1997+)

Renthal - Twinring Rear Sprocket Yamaha YZ, YZF 125-450 (1997+)

• Renthal Twinring features a unique, dual-material design combining a hardened steel outer chain ring that is heated to 200°C before being permanently fitted to the Ultralight aluminum inner, creating a permanent bond for the life of the sprocket.
• The result is a lightweight, long-wearing rear sprocket fit to tackle any condition you can find, without adding unnecessary un-sprung weight and compromising power delivery.
• The inner ring of the unique Renthal Twinring is engineered from Ultralight 7075 T6 Aluminum keeping the weight to a minimum, and the outer ring is made from Electroless Nickel Plated steel, ensuring an ultra long service life
• Flat socket set screws prevent lateral movement between the rings in high velocity impacts
• Twinring feature Renthal's self cleaning mud groove technology between each tooth preventing mud build up that traditionally leads to quicker wearing components