What are the numbers? Can't get my head around them...
Fatbike would be 100mm or 120mm BSA shell, with OLD of 170 or 190mm for QR, 177 or 197 for thruaxle. The wider spec tends to be for ~5" tyres, but there are plenty of frames which use the 190 rear with a 100mm BB.
@Emyr started
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What are the numbers? Can't get my head around them...