Bottom Bracket width on 90'ies MTB (Kona)

jebon · Jun 20, 2019

Hi!
I want to put a square taper LX triple crankset on my '98 Fire Mountain.
It currently has an XT with an octalink BB.
The shop I'm looking at has widths from 110mm to 127,5mm which i guess is a pretty big span.
Does anyone know if widths varied a lot on 90'ies MTBs or was there a specific width that was the norm?
I'm running with a front derailleur, so I would think a difference of 17,5 mm total could matter.
Thanks,
Jess

My_Teenage_Self · Jun 20, 2019

You'll need the correct length bb for both the frame (68 or 73mm shell) and axle length for the crankset. Which LX crankset was it? Someone here will know which one you'll need.

jebon · Jun 20, 2019

My_Teenage_Self":15tk1g7t said:
You'll need the correct length bb for both the frame (68 or 73mm shell) and axle length for the crankset. Which LX crankset was it? Someone here will know which one you'll need.

It's an FC-M569

My_Teenage_Self · Jun 20, 2019

110mm or 113mm, depending of what chainline you want - 47.5mm or 50mm.

http://www.bikepro.com/products/shimano ... table.html

jebon · Jun 20, 2019

My_Teenage_Self":2smqar2b said:
110mm or 113mm, depending of what chainline you want - 47.5mm or 50mm.

http://www.bikepro.com/products/shimano ... table.html

Thank you!

Bottom Bracket width on 90'ies MTB (Kona)

jebon

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My_Teenage_Self

jebon

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My_Teenage_Self

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