PearTune 3.0 for Shimano EP801 and EP6 motors

This Peartune tuning kit removes the 16mph (25km/h) speed limit, allowing the motor to help you at higher speeds. For these Shimano bikes, the speed limit is raised to 31mph (50km/h).

When tuning kit is activated - real speed will be displayed up to 14-15mph (21-25km/h), at higher speeds the bike will show incorrect, slower than real speeds.

The tuning kit can be activated or deactivated anytime by light control function of the bike menu. Refer to the bike manual. If the lights are ON, PearTune MSO is OFF. When the lights are OFF, PearTune MSO is ON. If your bike lacks an active lights port, visit a Shimano dealer to activate the lights port and have the display programmed to manually turn the lights on and off.

Once activated, the tuning kit allows you to reach speeds of 25 mph (40 km/h) and even up to 31 mph (50 km/h)!

To deactivate the tuning kit, turn the lights ON. Your eBike will then function as if the chip is not installed.

This Peartune tuning kit is made to fit all Shimano EP801 and EP6 motors.


Not Compatible with Shimano E8000 / E7000 / E5000. You would need Peatune for Shimano E8000 / E7000 / E5000. Not Compatible with Shimano EP8. You would need PearTune 3.0 for Shimano EP8

Refer to the bike manual for detailed instructions. Installation Steps:

Remove the motor cover. Disconnect the speed sensor. Loosen the screw on the positive (+) light clamp of light connection terminal. Attach the speed sensor to the MSO unit and connect the MSO unit to the motor. Connect the red power cable to the positive light clamp and tighten the screw. Secure the MSO unit in place, fasten the wiring with ties, and reattach the plastic cover. The bike is now ready.

If you are planning to install PearTune on a brand-new bike, make sure you ride it for at least 0.6 miles (1 km) before the tuning kit is activated.

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 of Peartune products. Electric bikes equipped with Peartune products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with Peartune products can be used exclusively on private property and entirely at one’s own risk. The use of Peartune products may void the warranty of your ebike.

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 2 years 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.