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Ride your 15mm wheels in a Fox40 Rux38 or Boxxer
Most mountain bikes use a 15mm axle in the front, but when you buy a DH fork, you suddenly need a 20mm front wheel hub. Bummer…
Problem solved: Easily mount your 15mm Boost MTB wheel into a Moutainbike Downhill forks lik RockShox Boxxer, Fox 40, or SR Suntour Rux38, no tools, no new hubs, no hassle.
Say goodbye to the Axle in-compatibility issues, with Freakynuts, there’s only one MTB standard: the 15mm thru-axle.
Buy the Freaky Nuts Adapter and Ride whatever 15 x 110mm wheel in a Rockshox Boxxer, a SR Suntour Rux 38 or Fox 40 Downhill Fork in Seconds.
Save Money, Time en Frustration now!
If you’re a serious mountain biker, you know the drill: you’re shredding trails with your single crown fork, rocking that sweet 140mm to 180mm travel.
But then, you crave something more. You want to go big. You want to hit the bike park and crush it with a 200mm Downhill double crown fork. But here comes the hassle—different axle sizes, different wheels, extra costs, and a mountain of frustration. Sound familiar?
Welcome to the world of the Freakynuts Adapter Set—your game-changing solution that lets you switch from a single crown to a double crown fork without the need for new wheels or the extra headaches. This is a product for riders, designed by riders who are tired of the industry’s limitations.
It’s time to break free!
Why You shoud use this Adapter
Shred Harder, Faster, and Smarter
No more fumbling around with multiple wheels or axle sizes. The Freakynuts Adapter Set lets you use your existing 15mm Boost wheels with any 20mm Boost fork, like the Rux38, RockShox Boxxer or Fox 40. That’s right—just two CNC-machined bushings made from aircraft-grade aluminum, crafted to perfection in Germany. Slide them in, mount your wheel, and you’re good to go. It’s that simple!
Forget the Hassle, Focus on the Ride with our adapter
Switching between forks and wheels used to be a chore, with endless adjustments, re-lacing, and a pile of parts. The Freakynuts Adapter Set takes all that hassle and throws it out the window. Installation takes less than a minute—no tools, no fuss, no mess. So you can spend more time doing what you love: riding hard and pushing your limits.
Built to Last, No Compromises
We didn’t just make the Freakynuts Adapter Set easy to use; we made it bulletproof. Tested over 21 days across some of the toughest bike Downhill parks in Europe—Bikepark Leogang, Bikepark Samerberg, Bikepark Geisskopf, and Bike Republic Sölden—our adapter set stood up to everything we threw at it without a hint of wear and tear. It’s reliable, durable, and ready for anything you are.
Affordable, Accessible, Awesome
Let’s be real—nobody wants to spend a fortune on multiple wheelsets or forks just to enjoy different riding styles. TheFreakynuts Adapter Set is priced for every rider. No hidden costs, no gimmicks, just pure performance at a fraction of the price.
These CNC machines produce the adapters from extremely strong and lightweight aircraft-grade 7075 aluminum, adhering to the highest German manufacturing standards.
Join the Fork Adapter Revolution
Choose our Adapter and Ride whatever 15mm Boost wheel you like in a Rockshox Boxxer. a Rux38 or Fox 40.
More than a Product
The Freakynuts Adapter Set is more than just a product—it’s a revolution for mountain bikers who refuse to be held back. We created this solution because we’re riders who’ve faced the same frustrations you have. We believe in making biking accessible, fun, and hassle-free for everyone.
So, what are you waiting for? Get your Freakynuts Adapter Set today and unlock a world of new possibilities on your bike. Shred like hell, switch it up, and show those trails who’s boss. With Freakynuts, you’re not just riding—you’re dominating.
Ready to shred? Grab your Freakynuts Adapter Set now and ride without limits.
What Clients say
Max
“Super, awesome product! A really cool thing that saves you so much time and money. I personally have several bikes and three Boxxer forks… Thanks a lot!”
DH
“Awesome concept! I actually had to buy a new rim after switching forks to a Rux38, and now I have two different rims – which really annoys me. But with this adapter, I can keep using my old wheelset.”
Yannick L
“The Fox40 Adapter makes my life much simpler. I now dont have to carry around 4 front wheels for my DH and Enduro to be prepared for muddy and dry soil. The Team was really helpful in improving the product upon request. Thanks a lot!”
This past summer, we rigorously tested the Freakynuts over 21 days across various terrains. We pushed our Commencal V4.5 Supreme to the limit in places like Bikepark Leogang, Bikepark Samerberg, Bikepark Geisskopf, and Bike Republic Sölden.
And guess what?
Not a single sign of wear and tear!