Originally Posted by
Polaris OBark
If it is quick release and rim brake, it is almost certainly 130mm. (Disk brake quick release is 135mm, disk brake thru axle is 142 (but actually the same width), boost is 148, super-boost is bigger still ...). I think it is impossible, or nearly so, to find a 12 speed hub compatible with quick release.
The SRAM 900 hub has an XDR driver (not sure if it also comes in an XD version) and a variety of widths, including a QR135 version.
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Cheers, Mike