Bottom bracket width for F2000SL (optimo) or F700 (caad 4)

[Dirk-Jan]

I have this mountain bike, I suspect it is a F2000SL from 2006. I replaced the bottom bracket with the one from my F700 CAAD 4.

Unfortunately that bottom bracket now also needs to be replaced. I can tell that the bracket says "BC 1.37" x 24T". What should be the bracket width I need to order? What size did these bikes have? Thanks!

 

[black lightning 1987]

What type of bottom bracket does it have? What model crank? If it came from a CAAD4 I'd guess it's a square taper bottom bracket. A 2006 F2000SL should have come with an external cup Hollowtech bottom bracket.

 

[Dirk-Jan]

It has external cups. The crank is Deore LX.

 

[black lightning 1987]

All you need is a new pair of English threaded cups. The spindle is permanently attached to the crank. I'm no expert on Shimano MTB stuff but I suspect this is what you want:

Shimano BB-MT800 XT 24mm Bottom Bracket

Shimano BB-MT800 XT 24mm Bottom Bracket :: From $22.99 :: Shimano Threaded - Outboard Bearing Bottom Brackets

www.universalcycles.com

I would pull the crank and measure the diameter of the spindle where the bearings ride.

 

[Dirk-Jan]

Great, that is for both 68 and 73mm, that should fit.

Yes, pulling it out first is best, but I'd rather first order the bracket, so that I am not without bracket/cranks for too long.

 

[black lightning 1987]

Those cranks are simple to pull and reinstall. You don't need to do anything with the BB to check the spindle diameter.