Renthal sprockets are CNC-machined (not stamped) and feature a computer-aided Ultra light design to reduce unsprung weight and increase power transfer
Front sprockets are made from case-hardened, core-refined nickel-chrome-molybdenum alloy steel for the ultimate combination of strength and hardness
Rear sprockets are made from high-strength, specially enhanced 7075 T-6 aluminum 33% lighter than steel -- to further reduce weight and increase power transfer without sacrificing strength
Rear sprockets also feature special tooth profile that allows the chain to roll easily on and off the sprocket for longer wear, less noise and more power