FMF Factory 4.1 RCT Slip-On Muffler (Blue Titanium/Carbon) 045586 - KTM 250 / 350 / 450 SX-F / XC-F 2015-2018

FMF Factory 4.1 RCT Slip-On Muffler (Blue Anodized Titanium / Carbon Fiber End Cap) 045586 - KTM 250 / 350 / 450 SX-F / XC-F 2015-2018

Product Description

The FMF Factory 4.1 RCT Slip-On Muffler utilizes patented Resonance Chamber Technology to lower decibel levels while maintaining peak power output[cite: 1]. The internal chamber ducts increase internal volume to enhance exhaust scavenging, generating performance gains across the entire powerband[cite: 1].

Designed with FMF's Factory Forward Engineering to centralize mass and improve durability against crash damage[cite: 1], this lightweight blue anodized titanium muffler features a carbon fiber end cap. It includes a QuietCore 94 dB insert and a spark arrestor[cite: 1] to meet AMA and FIM sound regulations[cite: 1].

Top Features: FMF Factory 4.1 RCT

• RCT patented core shape reduces decibels without sacrificing peak power output[cite: 1].
• Internal ducts expand volume to improve exhaust flow and broad power delivery[cite: 1].
• Factory Forward Engineering centralizes mass and minimizes crash vulnerability[cite: 1].
• Comes equipped with a QuietCore 94 dB insert and spark arrestor[cite: 1].

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Can this slip-on muffler mount to the stock header?
A: Yes, it is fully compatible with either the stock header or an aftermarket FMF header[cite: 1].

Q: Are the spark arrestor and quiet insert included?
A: Yes, both a spark arrestor and a QuietCore 94 dB insert come pre-integrated into the package[cite: 1].

Expert Pro-Tip: When installing titanium slip-on systems, ensure the mid-pipe connection is completely free of oils or fingerprints before initial heat cycles to prevent permanent discoloration of the anodized finish.

Recommended Pairings:

• KTM 4-Stroke Performance Parts
• MX Chains
• Motorcycle Tools & Accessories

About Moto-House MX

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