KTM 125 Factory Performance Kit A42012954544 | KTM Direct

125 Factory Performance Kit A42012954544

£1,811.00 In Stock Coming soon

Coming soon

CODE: A42012954544




  • Description
  • FITS
  • Shipping and Refund

The KTM 125 Factory Performance Kit A42012954544 is the ultimate upgrade for your KTM 125 SX, meticulously designed to elevate your riding experience to new heights. Unleash the true potential of your machine with this comprehensive kit, meticulously engineered for peak performance.

Breathe new life into your ride with an impressive power boost of 2.5 HP, ensuring that every twist of the throttle delivers an exhilarating rush. The Factory Racing cylinder, Factory Racing cylinder head comb. chamber, Factory Racing spark plug, reinforced clutch spring, and piston, all included in the 125 Factory Performance Kit A42012954033, work in harmony to optimize your engine's output.

Experience the thrill of weight savings with a 15% reduction compared to the stock chamber, shedding approximately 0.3kg for improved agility and handling. The Factory Racing Expansion Chamber A42005907500 further contributes to this weight advantage while enhancing power delivery and overall performance.

Elevate your auditory experience with the Akrapovic Slip-On Line Exhaust A42005979000, designed for a harmonious blend of power and sound. Feel the symphony of your engine's roar as you accelerate with confidence.

What sets this kit apart is the integration of special engine mapping, fine-tuned to extract maximum potential from each component. The result? A bike that not only looks and sounds the part but delivers a ride that's nothing short of extraordinary.

Transform your KTM 125 SX into a performance powerhouse with the KTM 125 Factory Performance Kit A42012954544 - where power, precision, and passion converge for the ultimate riding experience.

  • Gaining additional 2.5 HP
  • Saving 15% weight compared to stock chamber (~ 0.3kg)
  • Improved power delivery
  • Increased performance with special engine mapping

This kit includes the following components:

This kit is compatible with the following KTM motorcycle models:

  • 125 SX 2023-2025

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.

Customer Reviews

Be the first to write a review

Recently Viewed