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)