Bottom Bracket Length

Mystique

Hi.

How do I determine which length Bottom Bracket I need - I plan on running a compact chainset in a Look 555 frame. Have heard both 102mm & 111mm mentioned...?

Any ideas??

Thanks.

Big Red S

It depends to a large extent on your choice of crank.

In general, if there are two sizes given, the slightly shorter one is for a double, the longer for a triple.