55505907001

KTM FMF Factory Fatty Expansion Chamber 250/300 SX/XC/XC-W 2019-2023

#9 Best Seller
in FMF
This OEM part is in stock and ships in 1-2 business days.
1 item left
  • Untreated surface   
  • Extra strong sheet steel   
  • Wide, even engine speed range   
  • Higher speed   
  • More traction   
  • Better gas control   
  • Uncompromising race look

Combination with FMF silencer recommended

Approvals
  • Closed Course Competition Use Only

Material     

  • Stainless steel 

Surface     

  • Natural/untreated 

Factory Racing     

  • USED BY FACTORY RACING 

    FITMENT

    • KTM 250 SX 2019-2020
    • KTM 250 XC 2019
    • KTM 250 XC TPI 2020-2022
    • KTM 250 XC-W 2023
    • KTM 250 XC-W TPI 2020-2022
    • KTM 300 XC 2019
    • KTM 300 XC TPI 2020-2022
    • KTM 300 XC-W 2023
    • KTM 300 XC-W Six Days TPI 2020
    • KTM 300 XC-W TPI 2020-2022

    PROPOSITION 65

    ⚠️WARNING

    This product can expose you to chemicals known to the State of California known to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65

    be the first to know

    • Untreated surface   
    • Extra strong sheet steel   
    • Wide, even engine speed range   
    • Higher speed   
    • More traction   
    • Better gas control   
    • Uncompromising race look

    Combination with FMF silencer recommended

    Approvals
    • Closed Course Competition Use Only

    Material     

    • Stainless steel 

    Surface     

    • Natural/untreated 

    Factory Racing     

    • USED BY FACTORY RACING 
      • KTM 250 SX 2019-2020
      • KTM 250 XC 2019
      • KTM 250 XC TPI 2020-2022
      • KTM 250 XC-W 2023
      • KTM 250 XC-W TPI 2020-2022
      • KTM 300 XC 2019
      • KTM 300 XC TPI 2020-2022
      • KTM 300 XC-W 2023
      • KTM 300 XC-W Six Days TPI 2020
      • KTM 300 XC-W TPI 2020-2022

      ⚠️WARNING

      This product can expose you to chemicals known to the State of California known to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65

      The fitting instructions for KTM PowerParts can be accessed online. Go to www.ktm.com/manuals and enter the part # under the "POWERWEAR & POWERPARTS MANUALS" section to access the owner's manual (fitting instructions) for this part.

      Warranty Policy

      All parts sold by KTM Twins are covered exclusively under the manufacturer’s warranty, if applicable. KTM Twins does not provide any additional warranties, express or implied, beyond what is offered by the manufacturer.

      View our returns policy for more information.

      Route Package Protection

      Route Shipping Protection is now available on all orders. Route's Package Protection is a package protection solution that helps cover your order in the event that your order gets lost, stolen, or damaged while in transit. We know how frustrating it is to have something happen to your order, so we’ve partnered with Route to offer added assurance that you’re supported, no matter what.

      View our shipping policy for more information.