I have sold a frame and bought a replacement. The old frame had a short head tube so the steerer was cut fairly short (170mm). This is too short for the new frame by about 10 to 15mm.
I am happy to sell/swap the fork, and have advertised it here. If someone buys it then great, but I'm preparing myself for the possibility that nobody wants it. Is there a safe way of extending the steerer by 15mm?
I have contacted BBB about their extender, but they will only state that it is not recommended for use on 'mountain bikes'.
Any help gratefully received.