Product compatability (bottom bracket and frame) I love biking, but I'm really no mechanic. I currently have a Shimano M6100 groupset (Deore) with me. A friend is going to give me a good deal on a carbon MTB frame, but I'm worried about compatability, particularly the bottom bracket (BB-MT500-PA). The frame specs describes it as &quot;PF 30 bottom bracket&quot; and &quot;46*73 mm&quot; with the Greek fie or phi symbol in between. Would that work or fit?
Bottom bracket standards are numerous and confusing. Have a look at https://wheelsmfg.com/bb-standards. That's the best online resource I have found so far that explains them.
PF30 bottom brackets are designed for a 30mm crank axle. Shimano cranks have a 24mm axle. What you need is a bottom bracket that adapts between the PF30 specification frame and the Shimano crank. An example is https://wheelsmfg.com/pressfit-30-to-outboard-bottom-bracket-for-24mm-cranks-shimano-black.html. Other manufacturers make similar products.