Factory 4.

Slip-On Muffler Factory 4.1 RCT

• SLIP-ON MUFFLER FACTORY 4.1 RCT
• RCT Technology (Resonance Chamber Technology): patented muffler shape that reduces noise while maintaining maximum power
• The internal passages in the RCT line chambers increase volume and improve exhaust flow, providing a power gain at all engine speeds
• FMF's Factory Forward Engineering technology centralizes the exhaust mass for increased durability.
• The innovative exhaust tip allows easy installation of the spark arrestor or dB killer by simply removing 4 screws
• Compatible with the original or FMF header
• 94 dB reducer insert included
• Spark arrestor included with the muffler
• Meets AMA and FIM noise regulations
• Compatible with: WR 250 F 2023-25 / YZ 250 F 2024-27