Freakynuts

Ride anny 15mm boost Wheel in a 20MM Fork

Buy the Freaky Nuts Adapter and Ride whatever 15 x 110mm Enduro wheel in a Rockshox Boxxer or Fox 40 Downhill Fork.

With this adapter Set you can put your 15mm x 110mm Boost Wheels in a 20mm  Fox 40 Downhill Forks.

Ride all kind of 15 x 110 MM hubs in a 20x110 MM Forks from Fox.
Only suitable for the Fox 40 Forks and equal models with the same dropouts.
15x110mm Axle is included.
CNC machines produced adapters from extremely strong and lightweight aircraft-grade 7075 aluminum, adhering to the highest German manufacturing standards.


Whatch this Video and see how easy it works.
How to put you nuts in your Forks

Ride all kind of 15 x 110 MM hubs in a 20×110 MM Fox 40 or Boxxer Forks.
Our are CNC machined adapters from extremely strong and lightweight aircraft-grade 7075 aluminum, adhering to the highest German manufacturing standards.

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 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 Simply Nuts 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 Need the Simply Nuts Adapter Set:

Shred Harder, Faster, and Smarter

No more fumbling around with multiple wheels or axle sizes. The Simply Nuts Adapter Set lets you use your existing 15mm Boost wheels with any 20mm Boost fork, like the 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

Switching between forks and wheels used to be a chore, with endless adjustments, re-lacing, and a pile of parts. The Simply Nuts 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 Simply Nuts Adapter Set easy to use; we made it bulletproof. Tested over 21 days across some of the toughest bike 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. The Simply Nuts Adapter Set is priced for every rider. No hidden costs, no gimmicks, just pure performance at a fraction of the price.

Downhill Boxxer Axel Adapter 15 110 20 110
Made in Germany.
These CNC machines produce the adapters from extremely strong and lightweight aircraft-grade 7075 aluminum, adhering to the highest German manufacturing standards.

Join the Revolution

Choose our Adapter and Ride whatever wheel you like in a Rockshox Boxxer.

Downhill Boxxer Axel Adapter 15 110 20 110
Effortless Switch from 15mm to 20mm Axle from Gravity, Enduro, and Bike Park Riding to Full Downhill Forks from Rockshox Boxxer and Fox 40.
Upgrade Your Ride Now!

More than a Product

The Simply Nuts 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 Simply Nuts 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 Simply Nuts, you’re not just riding—you’re dominating.

Ready to shred? Grab your Simply Nuts Adapter Set now and ride without limits.

Rock on, hardcore!

What Clients say

Max

“Super, geiles Produkt! Eine wirklich coole Sache, mit der man einfach so viel Geld und Zeit sparen kann. Ich selbst habe mehrere Bikes und drei Boxxer-Gabeln… Vielen Dank!”

DH

“Moin! Mega Konzept! Ich musste mir schon extra eine neue Felge kaufen nach dem Gabelwechsel und habe jetzt zwei unterschiedliche Felgen, was mich total nervt. Aber mit diesem Adapter kann ich meinen alten Laufradsatz weiterfahren.”

Frank Derrault

Great Engeneering, That is a very Useful adapter and it Saved me a lot of hussle and Money! Thanks

Riding Freakynuts Adapters at Bike Republic Sollden
Effortless Mountain Bike Fork Conversion with Freaky Nuts Adapter sets – Switch from 15mm to 20mm Axle for Gravity, Enduro, and Bike Park Riding. Upgrade Your Ride Now!

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!

Cheers,
Team Feakynuts

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