FAQLoad - Q-factors for various cranksets

This is a list I have pieced together from various articles and postings on the internet.

Make	Model	BB	Q-Factor	Claimed/Real
Extralight	E-Bones	BSA68	160mm	Claimed
FSA	K-Force Light Double	Ceramic MegaExo	168mm	Claimed
KCNC	K-Type XC2 Double		161mm	Real
Shimano	XT 750	UN72 (110mm)	163mm	Claimed
Shimano	XT 752	ES71 (113mm)	170.8mm	Real
Shimano	XT 760	HT2	175.2mm	Real
Shimano	XT 770	HT2	176mm	Real
Shimano	XTR 952	M952 (68-112.5mm)	163mm	Claimed
Shimano	XTR 960	HT2	168mm	Claimed
Shimano	XTR 970	HT2	169mm	Real
Sram	XX 166	GXP	166mm	Claimed
Sram	XX 164	BB30	164mm	Claimed
Sram	XX 156	GXP	156mm	Claimed
Sram	XX 156	BB30	156mm	Claimed

Short cranks for kids

Update 2021

Formula RX brakes

These are MY2012 versions and so feature the newer graphics as well as lever code numbers of FD532XX and caliper code numbers of FD520XX (last two digits denotes colour of master cylinder, caliper and/or annodized bore cap).

20" air forks for kids

There really is not much that's decent when it comes to 20" kids forks. Most are heavy, oversprung and crappy performing el-cheapo forks. There are, however, a few good options:

Fork and shock oils

Just my quick notes on the fork and shock oils I have been using

Frankenforks

There seems to be a surprising amount of interchangeability between the 32mm chassis forks from Rockshox, Fox and even Marzocchi. Here are some examples of frankenforks that people have put together:

XD driver bodies for various hubs

To run SRAM XX1 or XX0 11 speed you need a special XD driver body for your hub. A number of popular hubs have conversion driver/freehub bodies available:

Q-factors for various cranksets

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