E-Bike E-MTB Tuning Kit PearTune 4.0 for Bosch (Not Smart System)

Derestrict your e-bike for unlimited speeds!

Compatible with all ebike Bosch Motors without Smart System. With 4.0 version you can set whether the tuning should automatically be ON or OFF when the e-bike is switched on. 4.0 version also has "Lock the Chip" function - a feature that makes the tuning module virtually invisible

Regular price$217.00

&Free Delivery Worldwide

You can save money when buying more than one tuning kit. Can be combined with other brand/type tuning kits!
Buy 2 save $6.51
$217.00 $210.49
Buy 3 save $15.19
$217.00 $201.81


- TOM E.

#1 seller #1 SELLER
warranty 2 YEAR WARRANTY
easy to install EASY TO INSTALL
undetectable UNDETECTABLE

Compatible with all ebike Bosch Motors

(Except 2022 Bosch Smart System)

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!

E-Bike E-MTB Tuning Kit PearTune 4.0 for Bosch (Not Smart System)
E-Bike E-MTB Tuning Kit PearTune 4.0 for Bosch (Not Smart System)

Quick plug-and-play installation. No setup!

  • Increase the speed limiter from original 16 mph (25km/h) to unlimited speed!
  • See accurate speed on your ebike display!
  • 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

Frequently Asked Questions

This Peartune tuning kit removes the 16mph (25km/h) speed limit, allowing the motor to help you at higher speeds. With the speed limit removed, 28-37mph (~45-60km/h) can be expected, depending on the bicycle and gearing.

All readings like actual speed, max speed, average speed, distance etc. are correctly displayed.

The tuning kit can be activated directly on your bike’s display. After pressing the 'WALK' or ' + - + -' buttons (or long press of any button for the COBI display), from now on you will be able to ride at a speed of 25 mph (40 km/h), 31 mph (50 km/h) and even more than 37 mph (60 km/h).

To deactivate the tuning kit, press the 'WALK' or ' + - + -' buttons again. Your e-bike will then work the same as before installation of the chip.

With the new PearTune 4.0, you can set whether the tuning should automatically be ON or OFF when the e-bike is switched on.

With PearTune 4.0 you can set an individual activation code. When switching on and off, the display briefly shows whether the tuning was actually activated or deactivated for confirmation.

The level of maximum motor support can be set individually with the + and - buttons, in 1mph (1 km/h) steps.

Chip lock ("Lock the Chip" function): A feature that makes the tuning module virtually invisible. If the chip lock is activated by using the + and - buttons at the control element, the tuning chip is locked on the software side so that no one can recognize that a tuning tool has been installed on the e-bike. This means that the e-bike and display will function normally, and the tuning can no longer be switched on. The chip lock can only be deactivated later, and again with a specific + and - key combination.

This Peartune tuning kit is made to fit bikes with Gen2, Gen3 and Gen4 Bosch motors with INTUVIA, PURION, NYON, KIOX, COBI or SMARTPHONE Hub COBI displays.

Not compatible with Bosch Smart System. For the Bosch Smart System you would need Speedbox Bosch Smart System tuning kit.

When connecting Tuning Kit to an e-bike you will find connectors colored to make installation very simple. We have prepared detailed instructions and videos to make installation easy for you. Disassembly of our tuning kit is just as easy. 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.

Installation Guide:

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.

In case of updating the software of your e-bike, uninstall the tuning kit from the e-bike first, update the software and reinstall tuning kit back. Product's warranty does not cover eBike software updates. We recommend to contact us before updating the software.

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!