Factory 4.1 RCT Exhaust Silencer 08-25 Kawasaki KLX 140 R G L F - FMF 042382

FMF Racing’s Factory 4.1 RCT Slip-On Muffler is engineered for performance and durability, delivering substantial power gains and reduced weight for Kawasaki KLX140 and its variants. Featuring FMF’s advanced Resonance Chamber Technology™, this system boasts shorter length for improved mass centralisation and enhanced crash resistance. Constructed using aerospace-grade aluminium and stainless steel, the 4.1 RCT is designed for professional riders seeking power and reliability, and is manufactured entirely in Southern California for uncompromising quality.

Features

• FMF Resonance Chamber Technology™ maximises power and throttle response
• Shortened overall length for crash resistance and optimised mass centralisation
• Aerospace-grade aluminium construction with carbon end cap provides strength and lightweight benefits
• Substantial power improvements across the entire RPM range
• Significant weight reduction compared to stock exhaust
• Rapid Tuning System (RTS) for quick adjustments
• Compatible with both FMF and OEM headers
• Screen-type spark arrestor included
• Quiet insert available separately
• Designed for closed course competition use only

Specifications

• Type: Slip-On
• Configuration: Single
• Main Construction: Aluminium
• End Cap: Stainless Steel
• Midpipe: Stainless Steel
• Finish: Natural
• Spark Arrestor: Screen Insert (included)
• Quiet Insert: Sold separately
• Weight: 3.6 lbs (1.63 kg)
• FMF Item ID: 042382

Vehicle Fitment

Kawasaki

• KLX140 (2008–2020)
• KLX140F (2021)
• KLX140G (2017–2020)
• KLX140L (2008–2021)
• KLX140R (2021–2025)
• KLX140R F (2022–2025)
• KLX140R L (2022–2025)