12x157 mm Super Boost rear thru-axle (12 mm x 157 mm Super Boost, rear)
What a 12x157 mm Super Boost rear thru-axle measures, which bikes use it, and why thread pitch matters as much as the width.
Published dimensions
| Axle diameter | 12 mm axle |
|---|---|
| Hub width | 157 mm hub width (Super Boost Plus) |
| Position | rear |
| Thread pitch | varies by frame, typically M12 x 1.0 or 1.5 |
SHELL varies by frame, typically M12 x 1.0 or 1.5
SPINDLE see table
SPINDLE see table
Used on: Super Boost Plus frames from brands such as Pivot and some Knolly and Norco models.
12x157, or Super Boost Plus, is the widest mainstream rear at 157 mm, spreading the flanges further for a very stiff wheel. It is not interchangeable with 148 mm Boost. It shares a width number with old 157 mm downhill hubs but uses a 12 mm thru-axle interface.
Frames and related axle standards
12x142 mm rear thru-axle12 mm x 142 mm, rear12x148 mm Boost rear thru-axle12 mm x 148 mm Boost, rear12x100 mm front thru-axle12 mm x 100 mm, front15x100 mm front thru-axle15 mm x 100 mm, front15x110 mm Boost front thru-axle15 mm x 110 mm Boost, frontBSA bottom bracket shellthe frame's other threaded interface
SOURCES: NOBL Wheels, Standard, Boost and Super Boost, what's the difference · BikeRadar, Mountain bike axle standards: the complete guide