Bottom bracket
07-08-18 | 06:55 PM
#2
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From: Mich
Bikes: RSO E-tire dropper fixie brifter
I contacted trek inquiring about a different model and they responded back within a day with the answer. Worth a try if you're running out of options.
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07-08-18 | 07:20 PM
#3
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From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
The absolute best and assured that there's no assumptions going on is to remove the arms and measure directly. Andy
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AndrewRStewart
AndrewRStewart
07-09-18 | 08:32 AM
#5
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From: Retired to Penang Malaysia originally from UK
Bikes: My 1978 Raleigh from new, 1995 Trek, & constant changing & rebuilding of other bike projects.
As mentioned above, contact Trek, if they don't answer its no issue to pull off the crank, & left side & measure with calipers etc.
07-09-18 | 09:16 AM
#6
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Often the spindle length will be printed somewhere on the BB itself once you take it apart, but obviously that's no help if you're wanting to remove it and replace it all at once.
07-09-18 | 09:24 AM
#7
SE Wis
Joined: Apr 2005
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From: Milwaukee, WI
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
pull arms, measure shell and spindle length.
You can also look up the crank model and check for the recommended BB it requires as that is really what controls it.
You can also look up the crank model and check for the recommended BB it requires as that is really what controls it.
07-09-18 | 04:27 PM
#8
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From: Llano Estacado
Bikes: old clunker
07-09-18 | 04:46 PM
#9
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From: Eugene, Oregon, USA
It probably is "English/ISO".
Triple bottom brackets typically have slightly longer spindles than doubles. But, as others have mentioned, if you want an exact replacement for what is on the bike, then disassemble and measure. Heck, your bike is 9 years old. It may not be all original, and there are often multiple options.
Also, if your bike has a left lockring, the bottom bracket may be able to be cleaned, lubed, and adjusted, with nothing major to purchase (or perhaps new bearings).
Triple bottom brackets typically have slightly longer spindles than doubles. But, as others have mentioned, if you want an exact replacement for what is on the bike, then disassemble and measure. Heck, your bike is 9 years old. It may not be all original, and there are often multiple options.
Also, if your bike has a left lockring, the bottom bracket may be able to be cleaned, lubed, and adjusted, with nothing major to purchase (or perhaps new bearings).
07-09-18 | 06:29 PM
#10
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07-09-18 | 08:05 PM
#11
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07-09-18 | 08:21 PM
#12
SE Wis
Joined: Apr 2005
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From: Milwaukee, WI
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
07-09-18 | 08:30 PM
#13
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Shimano Alivio 48/38/28 w/chainguard
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