Factory 4.1 RCT Exhaust Silencer 17-20 Kawasaki KX 250 F - FMF 042374

The FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap represents the pinnacle of exhaust performance technology, incorporating patented Resonance Chamber Technology™ for increased power across the RPM range and improved durability. The shorter, forward-positioned muffler enhances mass centralisation, while aerospace-grade construction ensures strength and significant weight reduction. Manufactured in Southern California to the highest standards, this slip-on system is designed for serious riders seeking maximum power gains and contemporary materials.

Features

• Integrates advanced FMF Resonance Chamber Technology™ for optimal performance


• Shorter overall length reduces susceptibility to crash damage


• Positioning closer to the motor improves mass centralisation and handling


• Constructed from aerospace-grade aluminium, stainless steel, and carbon fibre


• Notable power gains throughout the entire RPM range


• Substantial weight savings for improved agility


• Includes a 94dB quiet insert and a spark arrestor screen insert


• Features the new RTS (Rapid Tuning System) for quick adjustments


• For closed course use only

Specifications

• Item ID: 042374


• Type: Slip-On


• Configuration: Single


• Construction: Aluminium muffler with natural finish


• Midpipe: Stainless steel


• End cap: Carbon fibre


• Spark Arrestor: Screen insert (included)


• Quiet Insert: 94dB insert (included)


• Weight: 7.6 lbs (approx. 3.45 kg)


• Carb Compliant: No

Vehicle Fitment

Kawasaki

• KX250F (2017–2020)