Bicycle Mechanics - Bontrager crankset BB cups....

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View Full Version : Bontrager crankset BB cups....

RobbieTunes
12-07-10, 04:13 PM
I see a lot of Bontrager cranksets for sale on eBay and elsewhere.
Almost none have the BB cups to go on the BB shell.

I bought one crankset, and it came with them.
I bought another, Race Light triple, and it did not.

Are these cups available, or am I SOL? (Shoot, Outa Luck)

Thanks.

AEO
12-07-10, 04:16 PM
I think bontrager uses GXP, which means you need a truvativ/SRAM BB.
I'm not 100% sure.
Bianchigirll
12-07-10, 05:30 PM
that is what you get for buying trek trash

Soil_Sampler
12-07-10, 05:40 PM
I think bontrager uses GXP, which means you need a truvativ/SRAM BB.
I'm not 100% sure.

correct.

http://enduroforkseals.com/id225.htmlgxp
operator
12-07-10, 07:39 PM
that is what you get for buying trek trash

Treks may suck hard, but that is a regular GXP bottom bracket, as has been said.
RobbieTunes
12-07-10, 08:12 PM
Thanks for the advice.

Bontager may be trash to some, but when you're trying to build a friend's daughter a bike for Christmas, you do what you can.

I didn't realize I was so close to the Road Forum.
RobbieTunes
12-08-10, 06:50 PM
Picked up some GXP, and thanks, folks.
AEO
12-08-10, 06:54 PM
Picked up some GXP, and thanks, folks.

just remember to use both spacers when installing on a 68mm BB shell.
operator
12-08-10, 08:05 PM
just remember to use both spacers when installing on a 68mm BB shell.

And you'd be wrong.
AEO
12-08-10, 08:36 PM
And you'd be wrong.

no, I'm quite correct.

68mm BB shell required both BB spacers on the GXP to be used with a truvativ triple. Otherwise the taller stepped portion of the axle won't rest on the BB properly, would leave a bad chainline and a rather large gap between the crank and BB on the drive side.