Warning: Tuned e-bikes & e-scooters are not permitted within the road traffic regulations!

Find Your Compatible Tuning Solution

Find Your Compatible Tuning Solution
Exclusively available at EBikeTuningShop MountainTuning Splug

Splug – Magnetic E-Bike Tuning. Plug In. Tune. Pull Off.

Discover a different approach to e-bike tuning: a compact, magnetic dongle that can be attached or removed in seconds.

With Splug, the entire tuning logic is contained in the removable dongle, not inside the bike. Attach the dongle to activate tuning. Remove it to deactivate tuning – the motor then returns to its 25 km/h assistance cut-off.

Developed by MountainTuning, Splug uses a signal-based tuning principle without modifying the motor software.

Discover Splug Find Your Motor System
The Splug Principle

One Magnetic Dongle. Two Clear Tuning States.

Splug makes activating and deactivating e-bike tuning straightforward. The magnetic dongle connects to a holder installed on the bike.

Splug magnetic dongle attached to its holder – tuning active
Tuning Active

Splug Attached

The magnetic dongle is connected to the holder. Tuning is activated for use on private property or in appropriately authorised competitions.

Splug dongle removed, showing magnetic connector contacts
Tuning Deactivated

Splug Removed

Remove the dongle and tuning is deactivated. Motor assistance cuts off again at 25 km/h. The holder and wiring remain installed on the bike.

Important: Removing the dongle deactivates tuning but does not automatically restore the bike to its original configuration or establish road-legal status.
Why Choose Splug?

Flexible Tuning. Simple Magnetic Handling.

Splug combines removable tuning technology with a compact magnetic connection.

  • Attach or remove in seconds
  • Tuning logic inside the dongle
  • No motor software modification
  • Signal-based tuning principle
  • Compact enough for a pocket or backpack
  • Magnetic attachment designed for wet conditions and vibrations
  • Replacement dongle available separately
  • MountainTuning – quality from Germany
Splug Compatibility

Which E-Bike Motors Are Compatible with Splug?

Splug is available for selected Bosch, Shimano, Yamaha, Giant and Panasonic/Flyer e-bike systems. Choose the correct version for your motor and installation position.

Bosch

Bosch Smart System – Frame Version

Magnetic Splug tuning dongle for Bosch Smart System with frame-mounted holder.

View Bosch Frame Version
Bosch

Bosch Smart System – Handlebar / Display

Splug version for installation near the handlebar or display, featuring a 100 cm cable.

View Bosch Display Version
Shimano

Shimano EP8 / EP800

Magnetic Splug tuning dongle for Shimano EP8 and EP800 e-bike drive systems.

View Shimano Version
Yamaha / Giant

Yamaha PW-X3 / PW-S2 & Giant SyncDrive Pro2

Splug magnetic tuning dongle for Yamaha PW-X3 and PW-S2, as well as Giant SyncDrive Pro2.

View Yamaha / Giant Version
Panasonic / Flyer

Panasonic / Flyer – 2-Pin Version

Magnetic Splug tuning dongle for compatible Panasonic and Flyer systems with a 2-pin connection.

View Panasonic / Flyer Version
Accessories

Splug Replacement Dongle

Need a replacement for your existing Splug? The magnetic dongle can be ordered separately.

View Replacement Dongle
Not sure which Splug you need? Check your e-bike motor system and the product-specific information before choosing a version.
Exclusively Available

Discover the Splug Tuning Dongle

Magnetic. Removable. Designed for selected e-bike drive systems.

Explore the Splug product family, compare the available versions and find the right magnetic tuning dongle for your e-bike.

Explore All Splug Versions
Important Legal Notice

Tuned e-bikes are not permitted on public roads, including when Splug is attached. Removing Splug deactivates tuning, but does not automatically establish road-legal status. Please read the safety and legal warnings and observe applicable local laws.