bottom bracket info

[cyclerelic]

i want to fit in a nice light square taper botom bracket into my old 91 orange O i will be fitting middle burn cranks 175 blue any help would be good thanks ..

 

[Inigo Montoya]

the old xtr u91 bb is light. but you need to measure bb width (68 or 73). and the model name or a photo of the middleburn cranks would be nice to find out the axle length.

 

[cyclerelic]

cheers

nice one sir ! soon as my cranks arrive i will post up info the lighter the better !

 

[rc300]

RS1 need a looooong 122.5mm bb
RS3 and onward usually usually use a 110mm depending on frame