Inner ring is the same high strength Ultralight™ 7075 T651 aluminum used for the standard Renthal sprocket
Outer ring is electroless nickel coated steel for ultimate durability and is designed with the minimum amount of material to keep weight down
The outer ring is expanded at 200°C and then fitted over the inner. Thisinterference fit combined with the wave pattern ensures a permanentbond
for the life of the chainwheel
The flat socket head screws add additional strength to the chain wheel during side impacts and eliminates contact with the chain guide
Self cleaning mud grooves between each tooth prevent dirt build up and reduce chain wheel wear and weight
Will outlast a standard all aluminum sprocket by 3 times, yet is much lighter
than an all steel rear sprocket
