Factory 4.1 RCT SL Exhaust Silencer 12-16 KTM 350 EXC-F 500 EXC - FMF 045472

Combining advanced FMF Resonance Chamber Technology™ with robust construction, the FMF Racing Factory 4.1 RCT SL Slip-On offers refined performance and durability for serious off-road riders. This slip-on exhaust leverages aerospace-grade materials, a lightweight aluminium body, and a stainless steel rear end cap, all engineered and manufactured in Southern California. With a compact design for reduced crash susceptibility, mass centralisation, and increased RPM-range power, this slip-on is perfect for enthusiasts demanding reliability and results on closed courses.

Features

• Incorporates FMF Resonance Chamber Technology™ internally and externally for optimised power delivery


• Shortened length reduces vulnerability to crash damage and centralises mass


• Constructed from aerospace-grade aluminium and incorporates a stainless steel rear end cap


• Significant increases in power across the full RPM range


• Noticeable weight savings over stock components


• Includes RTS (Rapid Tuning System) for quick and easy adjustments


• Can be paired with FMF or OEM headers for installation flexibility


• Supplied with screen-type spark arrestor and a 94 dB quiet insert


• Designed and manufactured entirely in the USA for assurance of quality and performance

Specifications

• Item ID: 045472


• Type: Slip-On


• Configuration: Single


• Construction: Aluminium


• Finish: Natural


• Midpipe: Stainless Steel


• Endcap: Carbon


• Spark Arrestor: Screen insert (included)


• Quiet Insert: 94dB insert (included)


• Weight: 4.8 lbs


• Application Notice: Closed Course Use Only

Vehicle Fitment

KTM

• 350 EXC-F (2012–2016)


• 500 EXC (2012–2016)