Archived: the OG noob question thread! 😀

[Redeye]

Pneumatic Wheel Compendium (Serious)

They must have thought you were talking about the axle spacer for the ATS trucks (the one between the alum hanger and the inside bearing (like a bit fat speed washer). That one is 16mm. We don’t use spacers between bearings, but if you prefer them the length we recommend is 22.3mm.

So MBS hubs don’t need spacers?