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1.) Why not just chuck a narrow wide on your current cranks?
2.) didn't know you could use BB30 cranks with BB86?
spotter-
You can't use a proper BB30 crank on BB86 as the shell is too wide. Rotor 3d+ or similar 30mm (386evo?) cranks work ok with their 4130 BB as they have a wider axle and use spacers when run in bb30 shells.
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As @danb pointed out, no cross compatibility between BB30 and BB86. I didn't think our TCX were BB86 though?
Currently cranks are 172.5 which are too long, and also the N/W rings for Shimano cranks look ugly imo.
danb
MechaMorgan
Cool, well that's the brakes and shifters sorting thanks to Amey.
Who has a 170mm BB30 crank that is easy to 1X that they want to sell me?