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FMF Factory 4.1 — RCT Titanium Anodized Slip-On — Beta 450 RC/450 RX

Part # 045690
Item #357884
Fits 2 motorcycles
  • Beta
    • 450 RC · 2025-2026
    • 450 RX · 2024-2026
Regular price $899.99 Sale price$809.99 Save $90.00
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  • Flat $10 U.S. shipping, free over $100
  • Ships from one of three U.S. warehouses
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WARNING: Cancer and Reproductive Harm, www.P65Warnings.ca.gov
FMF Factory 4.1 RCT Titanium Anodized Slip-On — Beta 450 RC (2025-2026), Beta 450 RX (2024-2026), 4-Stroke
Product Details

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 Blue Anodized Titanium 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 specifically to our standards.

Slip-on. Replaces the stock muffler and bolts to the stock header or an FMF MegaBomb/PowerBomb header, sold separately. Header not included.

This is a 4-stroke exhaust. It is engineered for the 4-stroke engine architecture above and physically will not fit a 2-stroke bike. Verify your engine type before purchase.

Fitment

  • Beta 450 RC 2025–2026
  • Beta 450 RX 2024–2026

Specifications

System TypeSlip-On
MaterialTitanium (proprietary alloy grade)
Material GradeAerospace grade
FinishBlue anodized (muffler)
End Cap MaterialCarbon fiber (blue)
TechnologyFMF Resonance Chamber Technology (RCT)
Made InUSA
Best ForOff-road / Trail, MX / Motocross

Verified from Garamoto’s catalog & fitment data.

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