Renthal Ultralight Rear Sprocket Honda Africa Twin / Triumph Bonneville / Speedmaster Renthal Ultralight Rear Street Sprockets are CNC machined from the same 7075 T6 aluminum alloy Renthal uses for their extremely popular off road chainwheels. To ensure the lightweight aluminum sprocket is able to withstand the rigors of street and track use, each sprocket receives a special hard anodizing to significantly increased hardness and wear resistance. An ultralight chainwheel means less unsprung weight and rotating mass, which results in quicker acceleration, quicker turn-in and better corner grip. Features: Constructed from 7075 T6 aluminium alloy Optimized CNC machining allows maximum weight reduction while maintaining strength Hard wearing anodized finish significantly increases the hardness and wear resistance Retains stock chain pitch Note: Image is for reference only, actual sprocket will vary slightly depending on your bike's make and model.