fungineers
Superflux 5" Motor
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The 5 inch motor; no longer a myth!
For years, the community has been eager for a complete 5-inch motor solution. The days of cannibalizing Hypercores and mismatched hubs and rotors are over. Introducing the Superflux 5 inch motor — the 5uperflux.
With a decade of experience perfecting the original 6" Superflux, we received countless requests for a 5 inch version. We took all the magic from the 6" Superflux, shaved off weight, refined the aesthetics, and after tens of thousands of dollars and a year of prototyping and testing, we proudly deliver exactly what the community asked for:
A 5" motor that is small, light, yet mighty! It outperforms competing 5" and even 6" motors from other brands, delivering smooth rides and extreme power while maintaining a lightweight setup with cushy tires.
Features & Improvements:
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CNC/Billet motor covers: Getting good thermal performance from a small motor isn't easy. All 5uperflux motors come with billet motor covers for enhanced thermal performance.
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N48SH magnets: One of our secrets was to use the highest grade magnets, the SH magnets, unlike the M magnets are built to withstand temperatures up to 120 degrees Celsius!
- Genuine NSK Bearings: Superflux never compromises on quality, as always we use the best and only original NSK Bearings.
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New and Improved Axle Blocks (more thermal goodness): Replaced the original FM style axle block with improved thermal performance and enhanced aesthetics. Axle blocks are sold separately: Funwheel Axle Blocks for Funwheel builds, GTFO Axle Blocks for GT/GTS builds.
- Highest Amperage Plug-in Single Connector: Uses the same trusted, industry-leading connector as the Superflux 6.
- Ground-breaking Performance: Available in two versions — High Torque (HT) and High Speed (HS). HS version is ideal for high-speed enthusiasts with battery setups from 15S to 20S, perfect for GT/GTS builds. HT version suits higher voltage builds (20S+) and riders seeking more torque, punchy acceleration, and hill-climbing efficiency.
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Power: True 3000W+ motor — the most powerful motor in a compact package.
5-Inch Superflux Motor Free spin Speeds:
| Version | Battery Setup | Freespin Speed | With 45A Field Weakening |
|---|---|---|---|
| HS | 18S | 35 mph | 45 mph |
| HS | 20S | 40.1 mph | 54.7 mph |
| HT | 20S | 30.5 mph | 49 mph |
| HT | 30S | 49 mph | 74 mph |
SuperFlux Motor Weight Comparison:
| Model | Wheel Size | Weight (Without Tire) |
|---|---|---|
| SuperFlux (Original) | 6 inch | 7.8 kg |
| SuperFlux (New Version) | 5 inch | 5.4 kg! |
Compatibility:
Compatible with Fungineers adapter blocks (Funwheel or GTFO/GTSFO).
Fits +XR frames with Funwheel blocks.
DISCLAIMER - The stock Outer Hub Bolts (Rail to Motor) are designed to fit X7/10 rails, they may not fit other aftermarket rails. Please buy our other specifically designed bolts if you plan on using other rail systems. You can buy these here.
Fits GT/GTS frames with GTFO axle blocks.
Please buy your Funwheel blocks here
Gtfo Blocks here
Shipping:
Pre-orders will be delivered Feb 2026.

I was really excited about this motor. I think this motor would work well for riders that don't ride trails crazy hard but I have had thermal issues and so have others that I have spoken 2. Others also report very different KV on detection and claim they don't have overheating problems. So Not sure. I have been tweaking my motor config to try to find a cooler config but It's been a struggle.
With it you get all the good things: power, tire softness and coolness. The Okonimiyaki of motors!
If you don’t ride trails aggressively this motor is great. After 35 miles of trails it’s overheated 3 times. Definitely not as good as the 6in.
Hello! This is not OK. We want to make sure you get a trouble-free motor. Please reach out to support@fungineers.us and they will fix it! Thank you :)