SpeedFun Furious Ultra for Specialized Gen4, 3.1 motor
5.0 · 3 reviewsDerestrict your e-bike for unlimited speeds!
It will show the halved data on any display (or app) starting from a certain threshold.
Tuning kit removes all speed limits. Possible to set a preferred range.
Has different operating modes to choose from
FREE DELIVERY IN MOST REGIONS
LIFETIME WARRANTY
EASY TO INSTALL
What does this Tuning Kit do?
Achievable speed
Calculate your speed
The achievable speed mostly depends on the eBike model. Enter your own values:
Check the highlighted values to see your speed.
Theoretical value from cadence and gearing only. Your real speed also depends on the motor, the tuning kit, the rider and the terrain.
Speed = cadence [rpm] × wheel circumference [mm] × front chainring teeth ÷ rear sprocket teeth × 60 [min/h] ÷ 1,000,000 [mm/km]
Is this Speedfun the right tuning kit for my bike?
This Speedfun tuning kit is made to work with Specialized 3.1 motor ONLY with any combination with all available displays and the Speacialized application.
Specialized ebike with 3.1 motor where the Furious Ultra device was successfully installed (this list is illustrative and not exhaustive)
- Specialized S-Works Turbo Levo 4 LTD
- Specialized S-Works Turbo Levo 4
- Specialized Turbo Levo 4 Pro
- Specialized Turbo Levo 4 Expert
- Specialized Turbo Levo 4 Comp
- Specialized Turbo Levo 4 Comp Alloy
- Specialized Turbo Levo 4 Alloy
How to install this Tuning kit?
If you are planning to install Speedfun on a brand-new bike, make sure you ride it for at least 0.6 miles (1 km) before the tuning kit is activated.
Other tuning kits for Specialized 3.1 motors
This kit
SpeedFun Furious Ultra for Specialized Gen4, 3.1 motor
| PearTune MSO 4.0 For Specialized Gen4, 3.1 motor
| SpeedBox 3.2 for Specialized Gen4 3.1 Motor
| SpeedBox 3.2 B. Tuning for Specialized Gen4 3.1 Motor
| |
|---|---|---|---|---|
| Price | 157.90 EUR | 266.27 EUR | 241.99 EUR | 288.69 EUR |
| Speed data | ||||
| Max speed | ||||
| Activation | ||||
| Warranty | LIFETIME WARRANTY | LIFETIME WARRANTY | LIFETIME WARRANTY | LIFETIME WARRANTY |
| View kit | View kit | View kit |
FAQ & legal
How does the Speedfun work?
Speed = Cadence [rpm] * Wheel circumference [mm] * Front Chainring Teeth / Rear Chainring Teeth * 60 [min/h] / 1.000.000 [mm/km]
The function of the Furious Ultra tuning device for Specialized 3.1 motor (Turbo Levo gen4) is to electronically manipulate the rotation speed of the rear wheel and to communicate to the motor a speed always lower than 25 KmH in order to obtain a real speed with very high active motor. The maximum speed limit will therefore be dictated by the power of the engine added to the power expressed by one’s legs.
When the tuning device is active, having no communication with the display, it will show the halved data on any display (or app) starting from a certain threshold.
This tuning kit can be installed on Specialized Turbo Levo (gen4) equipped with Specialized 3.1 motor and MasterMind T3.
Furious Evo Ultra devices offer a choice of operating modes:
– Always active, cannot be deactivated
– Activated/deactivated by pedaling with the wheel lifted
– If tuning was active before turning off, it will also be active after turning it back on.
– If tuning was active before turning off, it will be deactivated after turning it back on.
– Tuning can be activated/deactivated with an external button (not included in the kit).
For more information, see the instructions on the page.
The device is supplied plug and go ready to use and is installed in a very simple way thanks to the compatible connectors with which no physical modification of the ebike is necessary.
WARNING!
This device is not compatible with Specialized Gen1, Gen2, or Gen3 e-bikes equipped with TCU01 (blue LED), TCU01 (Mastermind), or TCD. This device is not compatible with Specialized ebikes equipped with motor-controlled electronic shifting.
How to use Speedfun Service Menu?
- Place the chain in the highest gear (the smallest rear sprocket).
- Place the left pedal at 11 o'clock.
- Lift the rear wheel and apply a strong pedal stroke (just one, with your foot). Let the wheel spin above 30 km/h for a few seconds.
The system recognizes acceleration and considers it as a command to activate or deactivate (cyclically) the speed release. When activated, the display shows the speed changing from real to halved. When deactivated, the display shows the speed changing from halved to real, and the bike returns as original.
Important legal note!
We strongly recommend using other safety features and protective gear to prevent injuries in higher speeds.
Peartune products are thoroughly tested and we stand by their quality - Peartune provides Lifetime warranty to all their products.
eBike Software Updates
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.
Product safety information (GPSR)
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