15x110 mm Boost front thru-axle (15 mm x 110 mm Boost, front)
What a 15x110 mm Boost front thru-axle measures, which bikes use it, and why thread pitch matters as much as the width.
Published dimensions
| Axle diameter | 15 mm axle |
|---|---|
| Hub width | 110 mm hub width (Boost) |
| Position | front |
| Thread pitch | commonly M15 x 1.5 |
SHELL commonly M15 x 1.5
SPINDLE see table
SPINDLE see table
Used on: the current mountain-bike front Boost standard on trail, XC and enduro forks.
15x110, known as Boost front, widens the hub from 100 to 110 mm to spread the flanges and stiffen the wheel. It is not interchangeable with 15x100, and a Boost hub uses wider flange spacing. Match the fork to a 15x110 hub.
Frames and related axle standards
Thru-axle on a Specialized Stumpjumper (2019 on carbon)15 mm x 110 mm Boost, frontThru-axle on a Santa Cruz Hightower15 mm x 110 mm Boost, frontThru-axle on a Santa Cruz Megatower15 mm x 110 mm Boost, front12x100 mm front thru-axle12 mm x 100 mm, front15x100 mm front thru-axle15 mm x 100 mm, frontBSA bottom bracket shellthe frame's other threaded interface
SOURCES: BikeRadar, Mountain bike axle standards: the complete guide · Velopedia, Boost spacing