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Trek 400d Bottom Bracket Size

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Trek 400d Bottom Bracket Size

Old 04-09-11, 02:27 PM
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nicoth
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Trek 400d Bottom Bracket Size

Hi. I have a Trek 400d (86 or 87, I think). Does anyone know what size bottom bracket it uses? There is some play in the cranks, and the original bottom bracket is so old I don't think it would be worth it or possible to overhaul it, especially since I imagine the cup/cone would be damaged. It uses an SR SXC-200 crankset, which I couldn't find any info on. The reason I don't disassemble it and measure it straight away is because it's a lot harder to get to the bike shop on foot. Thanks for any help.
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Old 04-09-11, 02:47 PM
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JohnDThompson 
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It should be a bog-standard, English thread, 68mm wide shell.
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Old 04-09-11, 07:50 PM
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nicoth
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But I still need to know the length of the spindle, right?
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Old 04-09-11, 08:38 PM
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You will have to pull the cranks to find out the size you need as cranks have different offsets, models,brands ect.. Also if there is a lot of clearance to the frame you can go a size smaller in width.
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Old 04-09-11, 10:29 PM
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Ah ok. Thanks.
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