PearTune 3.0 for Shimano EP8

Derestrict your e-bike to reach speeds up to 31mph (50km/h)!

This Tuning kit is compatible with Shimano EP8 motors with and without Di2. Does not work with Shimano EP801
Important! If You have Giant Revolt E+, you should choose the according option. Giant Revolt E+ EP8 motor runs a different software compared to other EP8 motors.

Regular price£189.00

&Free Delivery Worldwide

Please select an option:

You can save money when buying more than one tuning kit. Can be combined with other brand/type tuning kits!
Buy 2 save £5.67
£189.00 £183.33
Buy 3 save £13.23
£189.00 £175.77


- TOM E.

warranty 2 YEAR WARRANTY
easy to install EASY TO INSTALL

Main Product Information

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).

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 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]

The tuning kit can be activated directly from your bike’s display by pressing the 'LIGHT' switch. 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, press the 'LIGHT' switch again. Your eBike will then function as if the chip is not installed.

If there are no lights installed on the eBike or the Light button function is not active, do not connect the red cable. In this case, the tuning kit will be activated when you power on the eBike.

This Peartune tuning kit is made to fit all Shimano EP8 motors, with all Shimano displays made for EP8 motors. Not compatible with Shimano EP801!

Works with the Giant Revolt E+ Di2 powered by Shimano EP8 (mind product options)

Not Compatible with Shimano E8000 / E7000 / E5000. You would need Peatune for Shimano E8000 / E7000 / E5000. Not Compatible with Shimano EP801. You would need PearTune 3.0 for Shimano EP801/EP6

The MSO can be activated or deactivated anytime using the bike menu's light control function. Refer to the bike manual for detailed instructions. If the lights are ON, PearTune MSO is OFF. When the lights are OFF, PearTune MSO is ON. If you disconnect the red power cable, PearTune MSO will be "always ON," meaning it will activate automatically when you switch on your bike. If you have any troubles with installation or disassembly, do not hesitate to contact us.

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.

Compatible with Shimano EP8 motors

Unlock the full potential of your ebike!

  • You will ride faster and experience the thrills of owning a derestricted ebike -you will love the difference!
  • Install it effortlessly- quick plug-and-play connection - no setup required.
  •  Feel safe for your e-bike and warranty- it's safe for ebike and undetectable to keep your warranty safe!

PearTune 3.0 for Shimano EP8
PearTune 3.0 for Shimano EP8

Quick plug-and-play installation. No setup!

  • Increase the speed limiter from original 16 mph (25km/h) to 31mph (50 km/h)!
  • Enjoy it always ON or enable/disable when needed!
  • Get after-sales support from us and a two year warranty from PearTune!


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?

Who Are We?

From Riders to Riders

In Two Wheels Empire, we trust in innovation, premium quality and sustainability - that's what our business is about. Feel assured all our ebike products are carefully selected and we stand by them: if it's on offer here at Two Wheels Empire - it's been tested and selected by our team. Riders working with us are here to help you enjoy your ebike rides!

We are here to build an Empire, of people who strive for freedom, thrills and adventure, it's about time to make the best of your rides!