Q-Factor BB Size

O\'Neal

Hi, can anyone tell me if I can use a 68x113 ISIS BB with the KCNC XC1 ISIS Crankset?
The one I have is the same in the link below:
http://www.burls.co.uk/shop/kcnc-xc1-is ... p-658.html

I've just noticed In the listing it mentions: Q-Factor 180mm (118mm BB, 170mm arms)
Not sure what that means?

nicklouse

have a look in the FAQs for info on ISIS Axle lengths.
a 113 is the standard for 3 ring MTB cranks to give at normal 48-50mm chain line.

Q factor is something very rarely discussed in relation to MTBs. but it is the distance between the cranks at the pedal end.