FMF Factory 4.1 RCT Slip-On Exhaust with Megabomb Header for Honda CRF250R and CRF250RX, Part 041618

Upgrade the exhaust performance of your Honda CRF250R or CRF250RX with the FMF Factory 4.1 RCT slip-on muffler and Megabomb header combination, manufacturer and vendor part number 041618. Designed for serious motocross and off-road use, this system uses FMF Resonance Chamber Technology to reduce sound levels while maintaining strong power output across the engine’s operating range. The tuned exhaust is developed with application-specific core specifications to deliver responsive performance and refined exhaust pressure.

The aluminum RCT configuration features an aluminum canister paired with a durable stainless steel mid-pipe. Its patented canister shape increases internal volume for additional sound-absorbing material, while the chamber design helps enhance exhaust flow and power delivery. Factory Forward Engineering centralizes mass for improved handling and helps reduce the likelihood of crash damage. The innovative rear end cap allows straightforward installation of tuning tip inserts or a spark arrestor, and a spark arrestor and wash plug are included.

The accompanying FMF Megabomb header represents the next evolution in PowerBomb header development, providing substantial power increases throughout the usable rpm range. Its stainless steel construction offers a durable alternative to titanium while maintaining comparable performance characteristics. This exhaust system fits the 2025 Honda CRF250RX, 2025 Honda CRF250R, 2026 Honda CRF250R, and 2026 Honda CRF250RX. Professional installation and fuel tuning may be recommended to achieve the best results for your specific motorcycle and riding conditions.

Features:

• RCT slip-on exhaust system with application-specific tuned core specifications
• Patented Resonance Chamber Technology lowers sound output while maintaining maximum power potential
• Patented canister shape provides increased internal volume for additional sound-absorbing material
• Patented chamber design enhances and refines exhaust pressure
• Factory Forward Engineering centralizes mass and helps reduce crash damage
• Aluminum RCT canister with stainless steel mid-pipe
• Innovative rear end cap supports simple installation of tuning tip inserts or a spark arrestor
• Includes spark arrestor and wash plug
• Megabomb header delivers substantial power increases throughout the rpm range
• Stainless steel header offers durability with performance comparable to the titanium version
• Fits 2025 Honda CRF250RX, 2025 Honda CRF250R, 2026 Honda CRF250R, and 2026 Honda CRF250RX
• Brand: FMF
• Manufacturer and vendor part number: 041618