Main Product Information
SpeedFun FURIOUS for Brose is a revolutionary tuning kit which suppresses the speed limiter of your electric bike.
After installing your SpeedFun, your e-bike’s display will show real data up to 12mph (20km/h) - at higher speeds, the display will show half speed and relative data making it possible, by simply multiplying in mind by two, the calculation of the actual speed and miles or kilometers traveled.
The tuning kit manipulates the speed signal without altering the motor's power relative to pedaling speed. This guarantees a smooth motor control without speed limit interruptions. Depending on a tuning kit, some determine when assistance stops, while others remove the restriction entirely for continuous support. However, the achievable speed mostly depends on the eBike model. Achievable speed can be calculated using a simple formula:
Speed = Cadence [rpm] * Wheel circumference [mm] * Front Chainring Teeth / Rear Chainring Teeth * 60 [min/h] / 1.000.000 [mm/km]
After installation, your tuning kit will be activated with the activation of your eBike. Maximum speeds of ~30mph (50km/h) or even faster can be expected, depending on the bike and gearing.
You can choose the 'On/Off' or 'Easy' tuning kit:
'On/Off' option - The chip can be activated or deactivated anytime during the ride by pressing LIGHT BUTTON.
'Easy' option - The chip is activated automatically when you turn your e-bike on.
This tuning kit can be installed on ebike with Brose in aluminum (Brose C, Brose T, Brose TF, Brose S) or with Brose motors in magnesium (Brose S Mag) and Continental motors.
Mostly mounted on ebike Axevo, Bergstrom, Besv, BH, Bikel, BMW, Bulls, Campus, Cheetah, Cucuma, Devinci, Diavelo, Douze Cycles, e-Framer, Elops, Fantic, Fischer, FXX Cycles, Head, Hercules, Innata, Kraft Stoff, Leaos, LeeCougan, Olmo, Olympia, M1 Sport Technik, Maxx, Nox Cycles, Neomuv, NSR, Pedal Power, Pedego, Pininfarina, Poison, Pragma Industries, QWIC, Rockrider (Decathlon), Rotwild, Sblocs, Specialized, Sunn, Triobike, VKT regardless of the type of display or side control of the ebike.
Installation PDF:
Easy version Install PDF
On/Off version Install PDF
Installation video for Specialized Turbo Levo, Kenevo, Tero, Vado and Como
For Brose S-Mag motors
For Specialized Turbo Levo
Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use SpeedFun products. Electric bikes equipped with SpeedFun products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with SpeedFun products can be used exclusively on private property and entirely at one’s own risk.
The use of SpeedFun may void the warranty of your ebike.
We strongly recommend using other safety features and protective gear to prevent injuries in higher speeds.
Warranty does not cover damage resulting from eBike software updates. Remove the tuning kit before updating the software. Check with us first to ensure the kit is compatible with your updated eBike. We cannot guarantee that the kit will function the same after updates. Please exercise caution.

The bike feels completely different once derestricted - it's just like a whole different bike! The rides are so much more fun now! Tuning kits are safe to your bike and every ebiker should have one installed! You will love riding your ebike with it - guaranteed!
Matt - Owner of Two Wheels Empire
What Our Clients Say About It?
Works amazingly well and the MPH reads reasonably accurately as well as removing the manufacturer restrictions, my only criticism is the user and install instructions could dramatically improve. Overall an amazing well engineered product.
Ottimo prodotto però.....
Il dispositivo sembra funzionare bene peccato che per poter cambiare il suo settaggio bisogna scaricare una applicazione che sembra essere a pagamento. Con quello che costa il prodotto non mi sembra molto corretto.
3rd one I’ve had :(
To be honest I’m not sure about this kit. On the first kit I bought, the magnet wheel disintegrated after about 6 months use. To give them their due, Two-wheel Empire gave me a full replacement kit for half-price. However, the wheel has also disintegrated on the replacement kit after...read more
SpeedBox 3.0 B.Tuning for Specialized Levo SL
Excellent communication with the seller, very knowledgeable, answered all my questions. The Item arrived on time. Well packaged. The unit was easy to fit and set up using the free to download, Speedbox app. A very well made piece of equipment. Overall, an excellent company to deal with. I will...read more