Skip to product information
1 of 4


Flexball 4500-EM21

Regular price $9,580.00 AUD
Regular price Sale price $9,580.00 AUD
Sale Sold out
Free Shipping Australia wide.
Engine Throttle Input Type
CANBus Extension Harness Length


If you don't know your Engine Throttle Input Type, please click here.

This system controls 2x Electronic Engine and 2x Mechanical Gearbox. It connects via CANBus to 1x Flexball 4500 Dual Throttle Station.

The Flexball EM system is perfect for modern electronic engines combined with older mechanical actuated gearboxes. It's compatible with all electronic engine makes and models and supports a range of throttle inputs.

The setup features a mechanical lever on the actuator box for smoothly and reliably operating a push/pull style mechanical cable that connects to the gearbox. The EM actuator box can be conveniently mounted in the engine room, enabling a mechanical push/pull cable of up to 5m to connect to the gearbox actuator.

Experience unparalleled precision and durability with the Flexball 4500-EM21 throttle system. Crafted with Italian precision and engineering, these controls are built to withstand the toughest marine environments, ensuring years of reliable operation. Easy to install and compatible with a variety of marine engines, our controls are the ultimate choice for boat owners looking to enhance their vessel's performance.

The 4500-EM21 kit includes all components required for connection, except for the morse cable required to connect between the actuator box and the gearbox selector, which we advise be custom-made to specific lengths for the vessel.


  • 2x Actuator Box - 9-32V
  • 1x 4500 Dual Lever Throttle
  • 1x T-splitter
  • 2x Actuator Box Supply Plug
  • 1x 3m Data Transmission Cable
  • 1x 10m CANBus Extension Harness
  • 2x 5m Engine Throttle Harness
  • 1x Installation Manual

Download the Product Brochure



This is a special order item and will take approximately 12 weeks lead time from date of order. We will be in touch with you to discuss your engine requirements in detail.

Note: Mechanical Morse cable required between actuator box and gearbox actuator is not included.

Note: photographs for illustration purposes only.

Note: Systems to suit sterndrives requiring trim controls please contact THT for a custom quote.