SpeedFun Furious Evo easy+ for Bosch Performance Line CX, Race CX (gen. 4) Smart System with Rim Magnet

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]

Note:
- It is supplied ready to use in "ALWAYS ON" mode and cannot be deactivated.
- If you want to be able to activate and deactivate the speed release function, you need to cut/interrupt the jumper at the point indicated by the arrow (insulate both ends!). There is no way back after this. Read the activation and deactivation methods on the instructions.

Activation:
- Turn Off the ebike.
- Place the chain on the longest gear (the smallest rear sprocket).
- Position the left pedal at 11:00. From now on, do not turn the rear wheel.
- Turn On the ebike and wait for the complete check. Don't spin the rear wheel (not yet ..).
- Raise the rear wheel, give a strong pedal. Let the wheel spin over 30 km/h for a few seconds.
The system recognizes the acceleration and considers it as a command to activate or deactivate (cyclically) the speed release. Upon activation, the display (if present) shows the speed that passes from real to manipulated in the manner described above. When deactivated, the display shows the speed change from manipulated to real and the bike returns to its original condition.

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.
Speedfun Products are thoroughly tested and we stand by their quality. Speedfun provide 1 year warranty to all their Products!

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.