Shimano Ultegra FC-R8100 12-Speed Chainrings are compatible with Shimano R8100 cranksets and other, 110 BCD 4-bolt asymmetric cranksets.
Choose from Inner or Outer rings for 50/34 or 52/36 combinations.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
34t - Inner
Mfg PartNum: Y0NG34000
36t - Inner
Mfg PartNum: Y0NG36000
50t - Outer
Mfg PartNum: Y0NG98010
52t - Outer
Mfg PartNum: Y0NG98020