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    FDY Performance

    Factory 4.1 RCT Slip-On Exhaust Silencer 24-25 Kawasaki KX 450 F X - FMF 042403

    Factory 4.1 RCT Slip-On Exhaust Silencer 24-25 Kawasaki KX 450 F X - FMF 042403

    £638.16 GBP
    £638.16 GBP
    Sale Sold out
    Taxes included. Shipping calculated at checkout.

    The FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap is engineered for riders seeking cutting-edge performance through advanced Resonance Chamber Technology™. Featuring a carbon end cap and a compact design for reduced vulnerability to crash damage, this slip-on silencer centralises mass and delivers exceptional power gains across the RPM range. Constructed exclusively from aerospace-grade materials in Southern California, it provides significant weight savings and is optimised for rapid tuning and easy fitment.

    Features

    • Advanced FMF Resonance Chamber Technology™ internal and external design
    • Shortened, crash-resistant structure with Factory Forward Engineering
    • Significant power boosts throughout the entire RPM band
    • Lightweight aluminium canister with carbon end cap
    • Rapid Tuning System for quick adjustments
    • Manufactured from premium alloy-grade titanium and stainless steel
    • 94dB quiet insert and spark arrestor screen included
    • Designed for closed course use only

    Specifications

    • Item ID: 042403
    • Type: Slip-On
    • Configuration: Single
    • Construction: Aluminium (muffler), Stainless Steel (midpipe), Carbon (end cap)
    • Finish: Gray anodised
    • Spark Arrestor: Screen insert included
    • Quiet Insert: 94dB insert included
    • Carb Warning: No
    • Intended use: Closed course

    Vehicle Fitment

    Kawasaki

    • KX450F (2024–2025)
    • KX450X (2024–2025)

    FDY Performance – Engineered for riders who demand more.

    At FDY Performance, we deliver precision-engineered motorcycle parts trusted by riders across the UK and beyond. Every component is tested for reliability, durability, and peak performance so you can ride harder, longer, and with confidence.

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