Shimano Ultegra FC-6600 53T Chainring
It's usually best to by OE parts to ensure compatibility and quality and this Ultegra 6600 chainring is no exception - it is an excellent value to boot. Hard gray anodization to a precision machined ring with pick-up teeth and ramps for perfect shifting. 130mm bolt patttern. Works with all Shimano/SRAM 10 speed systems.