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FMF Factory 4.1 — RCT Titanium Anodized Full System — Kawasaki KX450F (2019-2023) — (see

Part # 042373
Item #357675
Fits 2 motorcycles
  • Kawasaki
    • KX450F · 2019–2023
    • KX450X · 2019–2023
$1,224.99 $1,102.49 Save $122.50
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
FMF Factory 4.1 RCT Titanium Anodized Full System — Kawasaki KX450F (2019-2023), Kawasaki KX450X (2019-2023), 4-Stroke
Product Details

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology (RCT) — both internally and externally. A patent-pending shape enhances and refines the exhaust pressure wave for optimal power output while lowering the sound level. Constructed from aerospace-grade titanium with a carbon end cap, the system is shorter, lighter, and quieter than stock.

  • FMF Resonance Chamber Technology (RCT) for power + quieter operation
  • Aerospace-grade titanium construction with carbon end cap
  • Shorter overall length — less crash-damage exposure, mass centralized
  • Rapid Tuning System (RTS) for easy insert and spark-arrestor swaps
  • Quieter than stock with huge weight savings
  • Manufactured 100% in Southern California

Fitment: 4-stroke bike specific — fits the following models:

  • Kawasaki KX450F (2019-2023)
  • Kawasaki KX450X (2019-2023)

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.

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