Early the 2020 season I wrecked my Dura Ace 9000 outer chainring due to a chain-suck and replaced it with the Rotor Aero noQ chainring, 4-arm, 110 mm bolt circle diameter. I will share my thoughts so far and have a look at the design details of the Rotor chainring, decision … [Read more...] about Rotor Aero noQ Chainring for Shimano Dura Ace 9000
Quality information about cycling products from a mechanical engineer on a bike
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