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    FDY Performance

    Factory 4.1 RCT Exhaust Silencer 25-25 Kawasaki KX 250 F X - FMF 042411

    Factory 4.1 RCT Exhaust Silencer 25-25 Kawasaki KX 250 F X - FMF 042411

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

    Designed for riders demanding top-tier performance and engineering, the FACTORY 4.1 RCT Stainless Slip-On with Carbon End Cap leverages FMF's advanced Resonance Chamber Technology™, offering internal and external enhancements for optimal power delivery. Its compact construction reduces crash susceptibility while centralising mass with a forward-mounted design. Manufactured entirely in Southern California from aerospace-grade materials, this slip-on provides substantial power gains across the RPM range and impressive weight savings, making it an ideal choice for competitive racers.

    Features

    • Suitable exclusively for closed course use
    • Incorporates FMF’s signature Resonance Chamber Technology™
    • Compact, crash-resistant design with forward muffler positioning to centralise mass
    • Aerospace-grade alloy and stainless steel construction
    • Carbon end cap for lightweight strength and durability
    • Aluminium muffler with a grey anodised finish
    • Rapid Tuning System (RTS) for quick adjustments
    • Massive power gains throughout the RPM range
    • Includes 94dB quiet insert and screen-type spark arrestor

    Specifications

    • Item ID: 042411
    • Type: Slip-On
    • Configuration: Single
    • Construction: Aluminium
    • Finish: Grey Anodised
    • Midpipe: Stainless Steel
    • Endcap: Carbon
    • Spark Arrestor: Screen insert (included)
    • Quiet Insert: 94dB insert (included)
    • Carb Warning: Not applicable

    Vehicle Fitment

    Kawasaki

    • KX250F (2025)
    • KX250X (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.

    We’re not just a brand — we’re a movement built by riders, for riders. Whether you’re chasing podiums, upgrading your build, or maintaining your machine, FDY Performance keeps you on the road and at the top of your game.

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