KTM Factory Racing Expansion Chamber A44005907500 | KTM Direct

Factory Racing Expansion Chamber A44005907500

£270.00 In Stock Coming soon
CODE: A44005907500




  • Description
  • FITS
  • Shipping and Refund

Unleash the true power of your KTM with the the KTM Factory Racing Expansion Chamber A44005907500. Designed for uncompromising race performance, this expansion chamber is tailored for those who demand the pinnacle of responsiveness and power from their ride.

Crafted from high-quality stainless steel and with an untreated surface, it exudes a raw, aggressive aesthetic that also contributes to the sensitive response that defines Factory Racing excellence. The Factory Racing Expansion Chamber ensures an impressive increase in both power and torque, delivering an unparalleled riding experience.

Compatibility with standard silencers makes customization easy, while the substantial weight savings of nearly 20% compared to the stock expansion chamber (approximately 0.4kg) elevate your bike's agility and handling. The natural, untreated surface adds to its rugged charm, reflecting the true spirit of off-road racing.

As a testament to its pedigree, the Factory Racing Expansion Chamber is the choice of champions, used by KTM Factory Racing. Elevate your ride to the next level with this precision-engineered component, where form meets function, and every detail is crafted for victory on the track. Upgrade to the KTM Factory Racing Expansion Chamber A44005907500 and experience the race-ready performance your bike deserves.

  • Suitable for standard silencers
  • Untreated surface
  • Uncompromising race look
  • Sensitive response
  • Increased performance
  • Improved throttle response and increases in both power and torque
  • Substantial weight saving
  • Saving almost 20% weight compared to the stock expansion chamber (ca. 0.4kg)
  • Material: Stainless Steel
  • Surface: Natural / Untreated
  • Factory Racing: Used by Factory Racing

This kit is compatible with the following KTM motorcycle models:

  • 250 EXC 2024
  • 250 EXC Six Days 2024
  • 250 SX 2023-2024
  • 250 XC 2023-2024
  • 250 XC-W 2024
  • 300 EXC 2024
  • 300 EXC Hardenduro 2024
  • 300 EXC Six Days 2024
  • 300 SX 2023-2024
  • 300 XC 2023-2024
  • 300 XC-W 2024
  • 300 XC-W Hardenduro 2024

Shipping Information


UK Shipping on orders over £50 (3-5 days delivery): FREE*

UK Shipping on orders under £50 (3-5 days delivery): £3.95

UK Express Delivery (1-3 days delivery): £6.95

Please note that the delivery times above are from the point of dispatch. Whilst many products are available for immediate dispatch, some items have longer lead times as stated on the product page. Be sure to check the expected availability times before ordering.


Custom Charges

If you are ordering goods for delivery outside the UK, please note that your consignment may be subject to import duties and taxes, which are levied once the goods reach the country of destination. Any such charges levied in relation to customs clearance must be paid by you. It is accepted by you that KTM Direct has no control over additional charges in relation to customs clearance. KTM Direct recommends that you check with your local customs officials or post office for more information regarding importation taxes/duties that may be applicable to your online order. You will be the importer of record and responsible for any import VAT and duty that needs to be paid. In addition, any charges for import clearance will be paid by you, the customer. Refunds of any returned order will be of items, not the services incurred.


KTM Direct use Royal Mail for smaller items and DHL for larger items (UK Shipping only)

Royal Mail deliveries are typically sent by Royal Mail 48 so will normally arrive within a maximum of 2-3 working days. DHL deliveries are typically made the next working day, but some remote areas may require an extra day. If your item has not arrived within 5 working days on either service then please contact us by email hello@ktmdirect.co.uk

All in stock orders placed up until 9.00am are dispatched the same working day. Any in stock orders placed after 9.00am may not be dispatched until the next working day.


Returns Information

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at hello@ktmdirect.co.uk. If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at hello@ktmdirect.co.uk.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded to your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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