FMF 4.1 RCT Titanium SlipOn Muffler Carbon Blue Vortex ECU Husqvarna FE501 17-19

100% of 100
Part Number
045586 + ECU-8E
Images are for representation purposes only. Actual Product may differ

The FMF 4.1 RCT Slip on Exhaust for the Husqvarna FE501 2017-2019 incorporates the latest in FMF Resonance Chamber Technology, both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

The Vortex ECU-8E for the Husqvarna FE501 2017-2019 has Advanced Launch Control Function, improved bottom end Power and throttle response as well as improved top end and over rev Power.

Power Ignition & Fuel Mapping for standard and modified engines are included for free as well as Traction Start and Enduro maps for traction and throttle control for better starting and stall prevention. This ECU increases the Rev Limit and advances Fuel Injection Timing for improved atomization and response, its Dual Injector Capable and includes a multi-Function Port.

All Vortex CDIs are factory programmed with Performance Maps developed through dyno and track testing exclusively with our network of technical support centers and top race teams worldwide.

Fitment: Husqvarna FE501 2017-2019
Muffler Specs:
-Blue Anodized Titanium Muffler with Carbon End Cap
-Massive Power gains throughout the RPM range
-Huge weight savings
-New RTS (Rapid Tuning System)
-FMF uses the highest quality proprietary blend of alloy grade titanium made specifically to our standards.

Vortex ECU-8E Specs:
Pre Programmed with 10 Performance Fuel & Ignition maps
Instant Plug in Performance (replaces standard ECU with no mods to wiring required)
Fuel Trim Switches adjust fuel mapping by +12.5% to -10% in Lo , Mid and Hi throttle bands
Adjustments require only a screwdriver and integrated switches provide visual feedback.
Simple to install with mounting hardware supplied (where required)
V-Boost - Programmable Voltage Boost Circuit for maximizing Spark Energy across the entire rev range
Higher / Lower Rev Limit (where required)
Robust design is fully encapsulated and O-ring sealed
Diagnostic Flash codes - tests for sensor faults and flashes codes to OEM FI light
Race Proven reliability
Re Programmable (Software and Interface hardware not Included)

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