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FMF Factory 4.1 — RCT Stainless Full System (044453)

Part # 044453
Item #357789
Fits 3 motorcycles
  • Yamaha
    • WR250F · 2023-2026
    • YZ250F · 2019-2026
    • YZ250FX · 2020-2026
$649.99 $584.99 Save $65.00
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  • Backordered, shipping soon
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WARNING: Cancer and Reproductive Harm, www.P65Warnings.ca.gov
FMF Factory 4.1 RCT Stainless Full System — Yamaha WR250F (2023-2025), Yamaha YZ250F (2019-2026) + 1 more, 4-Stroke
Product Details

The Factory 4.1 RCT in stainless steel construction. Same Resonance Chamber Technology and power gains as the titanium system, with a stainless mid-pipe and muffler body for budget-friendly toughness. Shorter length, lighter than stock, and quieter than OEM with FMF's Rapid Tuning System.

  • FMF Resonance Chamber Technology (RCT)
  • 304 stainless steel construction — rugged and corrosion-resistant
  • Shorter overall length for mass centralization
  • Rapid Tuning System (RTS) — sound insert and spark arrestor swaps
  • Quieter than stock with weight savings

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

  • Yamaha WR250F 2023–2026
  • Yamaha YZ250F 2019–2026
  • Yamaha YZ250FX 2020–2026

Specifications

System TypeFull system
MaterialAluminum
Material GradeAerospace grade
FinishNatural
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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