Factory 4.1 RCT Exhaust Silencer 18-23 KTM Husqvarna GasGas 350 450 - FMF 045629

Engineered for peak off-road and motocross performance, the FMF Racing Factory 4.1 RCT Titanium Anodized Slip-On exhaust with Carbon Cap delivers unrivalled power gains and weight savings. Integrating advanced FMF Resonance Chamber Technology™ both inside and out, this slip-on silencer shortens overall system length for improved crash resistance and mass centralisation. Manufactured exclusively from aerospace-grade titanium and carbon materials in Southern California, the Factory 4.1 RCT exemplifies precision, durability, and competitive advantage.

Features

• Closed course use only


• Aerospace-grade proprietary alloy titanium construction


• Blue anodised titanium muffler with carbon fibre end cap for weight reduction and modern aesthetics


• Massive power gains realised throughout the RPM range


• Enhanced centralisation by positioning the muffler closer to the motor


• Short overall length resists crash damage


• New RTS (Rapid Tuning System) allows quick insert changes


• Spark arrestor screen insert included


• 94dB quiet insert included


• Designed for single slip-on configuration


• Manufactured 100% in the USA

Specifications

• FMF Item ID: 045629


• Type: Slip-On


• Configuration: Single


• Construction: Titanium


• Finish: Blue Anodised


• Midpipe: Titanium


• Endcap: Carbon


• Spark Arrestor: Screen Insert (included)


• Carburettor Warning: No


• Quiet Insert: 94dB Insert (included)


• Weight: 6.8 lbs (approx. 3.1 kg)

Vehicle Fitment

GAS GAS

• EX 350F (2021–2023)


• EX 450F (2021–2023)


• MC 350F (2021–2023)


• MC 450F (2021–2023)

HUSQVARNA

• FC 350 (2019–2022)


• FC 450 (2019–2022)


• FC 450 Rockstar Edition (2018–2021)


• FX 350 (2019–2022)


• FX 450 (2019–2022)

KTM

• 350 SX-F (2019–2022)


• 350 XC-F (2019–2022)


• 350 XC-F Kailub Russell (2021)


• 450 SX-F (2019–2022)


• 450 SX-F Factory Edition (2018, 2020–2021)


• 450 XC-F (2019–2022)