These chainrings are made from aircraft grade alloy and are used with a 1/8'' chain. These rings give you the benefit of being able turn them around so giving you double the life. This gives upto 6 times more life than the best 2mm rings, being more cost effective for couriers giving more miles for your cash. Full range from 42 tooth to 53 tooth in 1 tooth increments. Allowing you to fine tune your gear ratio to your exact requirement.
Available in 5 arm with 135mm PCD, 144mm PCD and 130 PCD (sugino Messenger rings).