Description
15mm Axle Adapter for RockShox Boxxer (2019 – Present) Built for Real Performance
Looking for a 15mm axle adapter for the RockShox Boxxer that doesn’t flex, loosen, or fail?
The Feral40 15mm Adapter is a fully engineered performance upgrade, designed for riders who demand strength, precision, and reliability in downhill and enduro conditions.
This kit allows you to install a 15×110 mm Boost front wheel into a 20×110 mm RockShox Boxxer fork (2019–present) using a solid 15 mm thru-axle — not a hollow tube or sleeve system.
Solid Axle Design – Why It Matters
The Feral40 uses a single-piece solid axle, CNC-machined from 7075 aircraft-grade aluminum, including a dedicated fork adapter.
The result:
Increased torsional stiffness
More precise steering
Improved braking control
Long-term durability under extreme loads
Precision CNC Machining
Every component is CNC-machined with extreme precision for a perfect interface with the RockShox Boxxer fork. The threaded adapter installs smoothly and stays locked in place — no rattling, no movement.
Installation is simple:
Install with a standard Allen key (no special tools required)
Everything else on the fork remains unchanged
Specifications
Fits RockShox Boxxer (2019–present)
Wheel compatibility: 15×110 mm Boost
Fork compatibility: 20×110 mm RockShox Boxxer (Last Gen only, older models are available in our Web Shop)
Material: 7075 aluminum
Manufacturing: CNC-machined, Made in Germany
Total weight: under 100 g
Why Choose Feral40?
This is not a generic adapter.
This is a purpose-built performance part, designed, tested, and refined for riders who push their equipment to the limit.
No compromises.
No unnecessary complexity.
Just strength, precision, and confidence.
Freaky Nuts Performance Parts
Only the best is good enough.
👉 Watch the installation video to see how it works
👉 Explore our other CNC performance upgrades in the shop
„Die Ware wird unter Ausschluss jeglicher Gewährleistung verkauft.“
