Renthal Chain Rings.
Renthall have landed on the MTB scene.
I know nothing about motorbikes. I'll prove it: I used to have a Honda Vison back in 1988 that flat out went 25mph. It even took 2 star petrol which back then was under 50p a liter. A full tank cost £2 and lasted me all week to Birmingham Wheels and back to skate Dickers Bowl.
What I do know about is Renthall, not a lot except that they are famous for their moto-x bars and sprockets..