FUELX PRO+ KTM DUKE/RC 390 Euro 5 / 5+

Note: To suit 2024+ models only. Earlier models please order here

FuelX Pro Plus – KTM 390 & Husqvarna 401 (Euro 5 / Euro 5+)

The FuelX Pro Plus is the latest generation of plug-and-play fuel injection optimization designed specifically for modern Euro 5 and Euro 5+ compliant KTM 390 and Husqvarna 401 engines.

Modern emission regulations require motorcycles to run extremely lean, which often results in jerky throttle response, hesitation at low RPM, and frequent downshifting. FuelX Pro Plus intelligently corrects this by automatically optimizing the air-fuel mixture in real time, delivering smoother power delivery, improved rideability, and stronger part-throttle performance.

Using advanced adaptive autotune technology, FuelX continuously monitors, learns, and adjusts to your engine’s condition, riding style, aftermarket upgrades, and environmental factors such as temperature, altitude, and humidity. The result is a motorcycle that runs smoother, cooler, and more responsive in every riding condition.

This version of FuelX Pro Plus is specifically designed for Euro 5 and Euro 5+ motorcycles using both pre-catalyst and post-catalyst lambda sensors.

Compatible Models

Suitable for KTM 390 and Husqvarna 401 platforms using the LC4c engine with dual lambda sensors, including:

KTM

• KTM 390 Duke (Euro 5 / Euro 5+ models)

• KTM 390 Adventure

• KTM 390 Enduro R

• KTM 390 SMC R

Husqvarna

• Husqvarna Svartpilen 401

• Husqvarna Vitpilen 401

(Compatibility applies to modern models equipped with both pre-cat and post-cat lambda sensors.)

Why FuelX Pro Plus?

• Up to 25% improvement in part-throttle horsepower and torque*

• Up to 2× faster throttle response and acceleration*

• Eliminates or greatly reduces jerky throttle response

• Helps prevent engine stalling

• Reduces the need for frequent downshifts

• Improves low-RPM rideability and torque delivery

• Helps the engine run cooler and smoother

• Enhances overall engine longevity

Features

• 10 Switchable Autotune Maps to match rider preference or bike setup

• Designed for Euro 5 / Euro 5+ motorcycles with dual lambda sensors

• Intelligent adaptive tuning that learns from riding style and engine condition

• Perfect complement to aftermarket air filters and exhaust upgrades

• Plug-and-play installation with OEM connectors

• Water-resistant, heat-resistant, and shock-proof design

• Reliable operation in all altitudes and weather conditions

• Noticeably improved throttle response and smoother power delivery