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12 × 148 mm Boost thru-axle

Thru-axle · 148 mm · 12 mm

Quick answer

24 of 30 trainers support 12 × 148 mm Boost thru-axle. Boost is 6 mm wider than 142. Needs a Boost-specific adapter; not every trainer offers one — check the per-trainer page.

Compatible trainers

Frequently asked questions

12 × 148 mm Boost thru-axle is a thru-axle rear-axle standard, 148 mm wide with a 12 mm axle. Modern mountain bikes (Boost spacing).