Shimano Ultegra FC-R8100 chainring

Shimano Ultegra chainring, 34 teeth, NK-type, 110 mm bolt circle (asymmetrical), chainline 44.5 mm, made of aluminium.

The small chainrings of the Shimano 105 FC-R7100, Ultegra FC-R8100 and FC-R9200 are compatible with one another. With the large chainrings of the 12-speed cranksets, the curves on the chainring mounting differ. Therefore, these are not compatible with one another.

Manufacturer’s note: for optimum Shimano shifting performance, only chainrings with the same model designation should be combined.

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com