MTB fork adapter for
15mm to 20mm conversion.
Run your 15mm wheel in 20mm downhill forks.
No new wheel. No hassle.
Most 15mm wheels donât fit 20mm downhill forks.
This adapter fixes that instantly.
More than Products.
JUST BETTER SOLUTIONS.
At Freakynuts, we donât just make products, we create solutions for riders who want to get more from their existing setup.
We focus on the small details others overlook, improving the parts of your bike that matter most on the trail.
Built by riders, for riders who want more out of their setup.
New / Latest Drops
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FreakynutsÂź Endgame Brake Lever Kit fits shimano – RAW
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FreakynutsÂź Endgame Brake Lever Kit fits shimano BLACK
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FreakynutsÂź Multi-Reach Stem 35mm – 45mm Cockpit RAW annodized
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FreakynutsÂź Raw Alumium Stem Topcap
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đ Fox 40 15mm Adapter â Premium Black â incl. Axle
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đ Rockshox Boxxer 2019â2026 â Premium Black â incl. Axle
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đFox Podium 15mm Adapter â Premium Black â incl. Axle
Why it works
Engeneered to fit.
Built to last.
Engineered to solve a real problem. Built to perform. No compromises.
Same Day Shipping
Ships the same day. No delays
1000+ Happy Riders
Trusted by riders worldwide
World Cup track Tested
Proven on real downhill tracks
Aircraft Alumium
Precision CNC machined
CHOOSE YOUR
FORK
Choose your fork. Find your 15mm adapter.
What Riders say
Max
âAwesome product! A really cool solution that saves so much time and money. I personally have multiple bikes and three Boxxer forks⊠Thanks a lot!â
DH
âAwesome concept! I actually had to buy a new rim after switching forks, so I ended up with two different wheelsets, which was really frustrating. With this adapter, I can finally keep using my original wheelset.â
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!”
Tested across some of Europeâs toughest bike parks â including Bikepark Leogang, Bikepark Samerberg, Bikepark Geisskopf, and Bike Republic Sölden.
And guess what?
Not a single sign of wear and tear!
