My wife just bought a new ibis HDR with xtr build. She loves it and really shreds now
. However on the first ride she started having shifting problems and we discovered the crank arm had become quite loose. I tightened it up and all was good for the rest of the ride. It has since come loose three more times though not as loose as the first time. I've searched for torque specs on the crank bolt with no success. Does anyone know how tight I should torquing the crank arm bolt? Thanks for help it's really appreciated.
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