Sram XX crank Q factor - 156 or 166 for Sworks Stumpy?

Discuss light weight issues concerning mountain bikes & parts.

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VTBike
Posts: 412
Joined: Mon May 16, 2011 8:14 pm

by VTBike

I have a 2006 Sworks Stumpjumper (dual suspension, 120mm travel); and want to slap on some XX 2x10 cranks. Not sure about the q factor sizing though. Is there a size that fits or does not fit? How do I figure that out?

Thanks for the help

by Weenie


socratease
Posts: 169
Joined: Thu Oct 13, 2011 5:25 pm

by socratease

Almost all full squish bikes will require the wider ones. Sram has measuring instructions, however, if you want to try and get the narrow ones.

tonytourist
Posts: 1137
Joined: Sat Oct 10, 2009 7:13 am
Location: 93306

by tonytourist

I ran a 166 on my 08, chainring clearance with a 39/26 was close to the chainstay, a 42/28 would not have worked.
Good luck! :thumbup:

VTBike
Posts: 412
Joined: Mon May 16, 2011 8:14 pm

by VTBike

Thanks guys, perfect info.

dynaserve
Posts: 272
Joined: Fri Jul 18, 2008 8:25 pm
Location: UK

by dynaserve

The 156 should fit (it fit my epic), but the heel clearance will be to low and you will probably catch the rear stays.

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