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Does anyone know the rear jub spacing on a 1988 Trek 400??(6 posts)

Does anyone know the rear jub spacing on a 1988 Trek 400??OregonMTB
May 23, 2002 3:59 PM
What size rear hub do I need? 130mm or 135mm or what? It's a 6 speed cassette on my 1988 Trek 400.

Thanks,

Eric
almost certainly 110 mm spacingEpicX
May 23, 2002 4:38 PM
are you trying to install a modern drivetrain or just repair what you have? if just a repair, it's gonna be 110mm on an old 6 speed. most all bikes since '92 or '93 have come with 130mm spacing to accomodate 8sp.
if you're trying to upgrade, and the frame is steel or maybe aluminum, you may be able to have it spread or just force a wheel into it. if it's a bonded trek carbon you're out of luck. you never know though. i'd say take it to a shop and have them throw on a modern rear wheel, you'll know damn fast if it's gonna squeak by or not.

if this isn't a restoration, i'd just say buy a new or used modern bike. bikes have come a looooong way since '88.
110 mm? Do you mean 126?Kerry
May 23, 2002 4:52 PM
I've never heard of any modern bicycle with a 110 mm rear triangle. I would suspect a typo, but you did it twice. Where did you come up with 110 mm? The bike is either 126 (most likely if shipped as a 7 spd) or 130. Never a 110.
126 it is. dont know where i pulled 110 from- i should proofreadEpicX
May 23, 2002 6:58 PM
Eric, Kerry's right.guido
May 23, 2002 6:26 PM
5 speed bikes were 120 mm dropout spacing. 6 speeds were 126 mm, as Kerry said. And now 130 mm.

Your Trek is most certainly 126mm. Why don't you measure it?
re: Does anyone know the rear jub spacing on a 1988 Trek 400??curlybike
May 23, 2002 7:16 PM
1 inch = 25.4 mm exactly. Measure it and convert.