Bought a used road bike and didn’t realize the threads on the right crank arm were half stripped. I’m new to this but want to replace it myself. I’m curious if the 5 arm bracket is a uniform size?Currently fitted with 172.5mm. Want to make sure I order parts that fit
by No_Occasion_7276
1 Comment
If you want to use the existing chainrings, you need to get a driveside crankarm with same [BCD](https://wickwerks.com/bolt-circle-diameter-bcd/), which in this case is 110/80.
The replacement crankarm also needs to correspond with the bottom bracket spindle, which I *assume* is a square-taper JIS.
However, it looks like you could just buy [a complete FSA replacement unit](https://www.fsaproshop.com/products/tempo-adventure-crankset) that includes both crankarms and the chainrings. If the chainrings have the same number of teeth as your current one, it’ll be a direct swap, provided the BB spindle corresponds, and I think it does.