Solving Boost vs Non-Boost on DH Forks. Why Throw a wheel or a Forks Away When You Can Fix It?
If you’ve ever tried to run a Boost wheel in a NON-Boost DH fork, you’ve probably run into the same frustrating issue:
👉 your rotor starts rubbing because the spacing is just… off. (3-5mm or so?)
Most riders and shops will tell you: “That won’t work.” Or worse: “You need a different fork or wheel”
We don’t agree. Fix it.
The Problem Nobody Really Solved
There’s a weird gap in the industry.
Some forks like the Marzocchi Bomber DH58 or older Fox 40 Elite era forks still rely on non-Boost hub spacing and brake alignment. Meanwhile, the rest of the world has moved on to modern Boost wheel setups. (main issue is the 5mm Brake spacing)
So what happens?
- Your wheel doesn’t sit right
- Your rotor doesn’t line up
- Your brake starts rubbing
- And suddenly… a perfectly good fork becomes “obsolete”
Honestly? That’s just a waste.
Because let’s be real some of these forks still ride amazing.
That classic Bomber flex feel on certain tracks? Still gold.
Why Throw Away a Good Fork?
We kept asking ourselves:
Why replace a fork that rides great… just because of spacing?
That question led to something simple but effective, lets adapt one of our adapters to solve this probelm once and for all!
The FreakyNut (NON) Boost Solution
We developed a way to adapt modern Boost wheels into Classig NON-Boost-config DH forks — without compromising strength.
The key:
👉 A solid aircraft-grade aluminum axle system
No sketchy spacers.
No flexy setups.
Just a clean, solid interface that actually holds up to DH abuse.
How It Works (Short Version)
- Install the FreakyNut system in your fork
- Mount your non-Boost wheel
- Install the solid axle
- Fine-tune alignment (a few mm adjustment)
- Done
Important: Wheel Alignment
Because you’re shifting spacing slightly, there’s one key step:
👉 Re-dish your wheel
- Loosen spokes slightly on the non-rotor side
- Tighten the rotor side equally
- Bring the wheel back to center
This ensures:
- Perfect rotor alignment
- No brake rub
- Proper tracking in the fork
Why This Works
The strength comes from the axle.
We use:
👉 solid aircraft-grade aluminum axles
This means:
- No unwanted flex
- No compromise in stiffness
- DH-ready reliability
This isn’t a hack it’s a proper mechanical solution.
Current Compatibility
Right now, we’ve developed this solution specifically for:
- Fox 40 (older Elite models and co.)
- Marzocchi Bomber DH58
Final Thoughts
This might not be the “standard” solution but it works. And it works really well.
It lets you:
- Keep riding forks you actually love
- Use modern wheel setups
- Avoid unnecessary upgrades
And honestly…
👉 why throw away a perfectly good fork when you don’t have to?
What Do You Think?
We’re curious what the community thinks.
Is this something you’d run?
Have you run into this problem before?
Let us know 👇