E-Bike E-MTB Tuning Kit PearTune MSO 4.0 for TQHPR50, 60. 40 motor

What does this Tuning Kit do?

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.

How does the Peartune work?

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]

Tuning kit is already active once installed. If you have + and - buttons on your eBike - tuning kit can deactivated and activated again by selecting the highest level of assistance and pressing - + - + buttons.

Service menu manual

How to use Peartune Service Menu?

The PearTune MSO 4.0 can be activated or deactivated anytime during the ride by short-pressing the LIGHT/WALK button or [+ -] buttons. Original function of these buttons remains unchanged. After activating PearTune - 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)!

Specialized: Activation: ONE short press of WALK button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] / (↑ ↓↑ ↓) buttons or ONE LONG press of + Indication: displayed number 9.9/4.0 for few seconds after activation/deactivation (or equivalent in miles)

Bosch: Activation: ONE short press of WALK button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] / (↑ ↓↑ ↓) buttons Indication: displayed number 9.9/2.5 for few seconds after activation/deactivation (or equivalent in miles)

Bosch Smart System: Activation: ONE short press of WALK button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] Indication: displayed number around 19.0/12.0 for few seconds after activation/deactivation (or equivalent in miles)

Brose: Activation: ONE short press of LIGHT button or TWO short press of LIGHT button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] / (↑ ↓↑ ↓) buttons Indication: displayed number 9.9/2.5 for few seconds after activation/deactivation (or equivalent in miles)

Giant: Activation: ONE short press of WALK button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] / (↑ ↓↑ ↓) buttons Indication: displayed number 9.9/2.5 for few seconds after activation/deactivation (or equivalent in miles)

Giant Ridecontrol GO: Activation: ONE short press of WALK button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] / (↑ ↓↑ ↓) buttons Indication: displayed number 9.9/2.5 for few seconds after activation/deactivation (or equivalent in miles)

Yamaha PW-X3 PW-S2: Activation: TWO short press of LIGHT button Indication: displayed number 9.9/2.5 for few seconds after activation/deactivation (or equivalent in miles) InterfaceX no indication, only if any App for Yamaha e-bikes avalaible

Yamaha PW-X/SE/TE/X2/CE/ST
Activation: TWO short presses of the LIGHT button Indication: displayed number 9/2 for few seconds after activation/deactivation (or equivalent in miles)

TQ Flyon: Activation: ONE short press of LIGHTS button and/or [+ - + -] buttons, or [- + - +], or [+ + - -]or [- - + +] / (↑ ↓↑ ↓) buttons Indication: displayed number 9.9/2.5 for few seconds after activation/deactivation (or equivalent in miles)

Service menu manual

Is this Peartune the right tuning kit for my bike?

This Peartune tuning kit is made to fit bicycles with mid-drive TQHPR50, 60, 40 motors, for example. Not Compatible with TQ motors.

How to install this Tuning kit?

Connect the display connector from PearTune underneath the display, aligning it with the connectors leading from the display unit. Inside the frame, route the PearTune connector along with the second pair of connectors, which are the long speed sensor cables. Thread them through the frame to the motor, and then connect them to the speed sensor. It's a straightforward process; all four connectors are original, have locking mechanisms, and there are no other connectors on the bike that could cause any confusion for you.

Important legal note!

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 Lifetime warranty to all their products.