The FMF PowerCore 4 HEX muffler is a single slip-on exhaust component for the 2027 Honda CRF450R and CRF450RX. It replaces the muffler section rather than supplying a complete exhaust system.

Features

• FMF’s Hi-Flo core and exhaust-flow design are intended to increase power and torque.
• Internal packing is designed for longevity.
• Includes a removable screen-type spark-arrestor insert. A quiet insert is sold separately.
• Check header compatibility before ordering.

Specifications

• Body: grey-anodised aluminium.
• Midpipe: stainless steel.
• End cap: stainless steel.

Cross-Reference OEM Part Numbers

• FMF part number: 041636.

Vehicle Fitments

• Honda CRF450R — 2027.
• Honda CRF450RX — 2027.