Description

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering – moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.
- Available in Natural Aluminum Muffler with Carbon End Cap
- Massive Power gains throughout the RPM range.
- Huge weight savings
- New RTS (Rapid Tuning System)
- FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards.
- Can be used with FMF or Stock OEM Header

![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/241f5638-8edb-463c-8bd2-d9777944e668-jpg.webp)
![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/87a13985-1904-4a1d-b15f-8304beecf5e7-jpg.webp)
![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/9e7830a5-3c0c-477f-a782-c12104859d02-jpg.webp)
![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/013de493-9c4b-4c1b-bac2-c8578edfb08b-jpg.webp)
![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/732b2217-75a6-480a-b4fd-a39bfed8e5be-jpg.webp)
![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/8c603283-f2bb-47a4-a7bc-524734643852-jpg.webp)
![I Powercore 4 TRX700XX 08-10 FMF Slip On Muffler []](https://boydsassets.specd.nz/uploads/2026/09/ee9e2ddb-02f5-4b15-82f7-50b68d8cc11a-jpg.webp)




Reviews
There are no reviews yet.