What bottom bracket type is this? Can you help me identify the bottom bracket for the following please.
The frame is a Norco One25 (version 3)
It does not appear to have internal threads.
The diameter is approx 6.3cm and the length is approx 7cm
It is an old dirt jump bike style frame - maybe from 2003.
I found a picture of the frame here, https://webimg.secondhandapp.com/w-i-mgl/5af860e8d31b2f5a14ce2cca
Thanks.
It appears to be American. Corroborate 51mm bore. If so that's what it is. It wants a BMX three piece and matching BB, depending on your crank choice. Mid didn't exist in 03, or at least that was a few years before its mainstream emergence.