Originally Posted by
Reiska
Hi I have a MTB with Shimano Octalink Crankset. The thread on the right crank arm has gone where the pedal is attached. Is it possible to replace only the arm or would i need to replace the whole crankset.
If you found an identical one, you could replace just one.
If you got one which is the same length but different design, you could replace just one, but it may look odd.
If you want it to look good, and don't find an identical one, you should replace both.