absoluteBLACK Chainring Shimano 9100 Oval 110/4BCD 38T Black

Ramps are designed specifically for a 50/34 combination
If only switching the inner chainring to oval, use all original crank bolts
6.5% ovality is ideal for road climbing 

The oval shape reduces stress on knees, helps to keep your legs fresh, and does not feel any different while riding
Chainring design reduces the possibility of leg cramps and allows you to maintain a better cadence while climbing
10, 11, and 12-speed compatible.

110mm 38t 4b 2x 9100 Bk.

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