specialized fsr comp bb size

Tommy2

Über Member
Location
Harrogate
Hi,
a work colleague has the above bike and it needs a new bb, he has shaown me a pic and it looks like a shimano UN55 but we don't know the size or thread needed.

Would it be English or Italian and it's a triple so I'm not sure on the spindle either (i think he has lost some bits including the spindle)
so wondered if anyone had any idea about this.

It's a pretty old bike too if that helps bit don't know the age.

107mm seemed to ring a bell with him as he said he measured it but that seems to be the shortest option which isn't right for a triple is it?

Cheers
 

lpretro1

Guest
If it is square taper as shimano un55 implies then simply remove cranks and measure axle length - it will be english thread
 
Top Bottom