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FMF Factory 4.1 RCT Stainless Steel & Aluminum Exhaust Muffler with Carbon End Cap Kawasaki KX250

The FMF Factory 4.1 RCT Slip-On Exhaust Muffler is designed for the Kawasaki KX250F (2025-2026) and KX250X (2025-2026). Featuring FMF Resonance Chamber Technology (RCT), it delivers significant horsepower and torque gains throughout the RPM range while reducing overall weight. Its Factory Forward Engineering positions the muffler closer to the engine to improve mass centralization and reduce the risk of crash damage. Constructed with a gray anodized aluminum muffler body, stainless steel mid-pipe, and carbon fiber end cap, it offers an excellent balance of lightweight performance and durability. The exhaust also incorporates the Rapid Tuning System (RTS) for optimized performance and includes a removable screen-type spark arrestor. It meets AMA Professional Sound Requirements and is intended for closed-course competition use only.

FMF Factory 4.1 RCT Stainless Steel & Aluminum Exhaust Muffler with Carbon End Cap Kawasaki KX250

by FMF
SKU: 6109847
Regular price $1,298.99 $1,234.99 5% off
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Alpinestars MC26

Racing/Sport

FMF Factory 4.1 RCT Stainless Steel & Aluminum Exhaust Muffler with Carbon End Cap Kawasaki KX250

The FMF Factory 4.1 RCT Slip-On Exhaust Muffler is designed for the Kawasaki KX250F (2025-2026) and KX250X (2025-2026). Featuring FMF Resonance Chamber Technology (RCT), it delivers significant horsepower and torque gains throughout the RPM range while reducing overall weight. Its Factory Forward Engineering positions the muffler closer to the engine to improve mass centralization and reduce the risk of crash damage. Constructed with a gray anodized aluminum muffler body, stainless steel mid-pipe, and carbon fiber end cap, it offers an excellent balance of lightweight performance and durability. The exhaust also incorporates the Rapid Tuning System (RTS) for optimized performance and includes a removable screen-type spark arrestor. It meets AMA Professional Sound Requirements and is intended for closed-course competition use only.