TSP Power Kit TBI – KTM & Husky 125cc

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The 2023+ KTM/Husky 125cc TBI (Throttle body injection) Power Kit includes a billet TSP head (cap and insert), thicker base gasket, reflash of your stock ECU with improved fuel maps, advanced ignition, more refined power valve settings, and head O-ring & washer kit. TSP Power Kits offer the best performance gains for all late model fuel injected two strokes.


Your bike's VIN# is needed for TBI ECU Re-flash. Typically 17 characters and can be found on the bike's frame steering tube or registration/pink slip.
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SKU: PWRKIT+TBI-125 Category:


This package fits 2023+ KTM and Husky 125 models with the new 125 TBI (Throttle body injection) engine.

This package includes:

  • A Billet TSP Head (Cap and Insert)
  • Thicker base gasket to suit TSP’s combustion design
  • Reflash of your stock ECU with refined Power valve settings, improved fuel and ignition maps developed by TSP.
  • Head O-ring & Washer Kit

This package makes a huge difference to the 125 TBI over stock, with some key features being:

  • Significant mid-top RPM performance with more over-rev
  • Drastically improved throttle performance in the whole RPM range
  • Both Green & White maps are tuned and the stock map switch works like normal to select between the customised maps.
  • Smoother throttle response
  • Better fueling
  • An extra 2HP+ at peak power
  • Much more enjoyable to ride

It features an improved combustion chamber design that gives more performance from bottom to top as well as reduced risk of detonation.

Note: In order for us to reflash your TBI ECU, please ship us your ECU with a copy of a work order form, and be sure to include your bike’s VIN # on the work order form.  We are not able to flash your TBI ECU without the VIN #.

All TSP mods are designed and dyno tested in-house at TSP so you can be sure you’re getting reliable performance for local conditions.

3 reviews for TSP Power Kit TBI – KTM & Husky 125cc

  1. fred beaver (verified owner)

    Great service gave email updates. Did 125 tbi head and ecu reflash. The ridability upgrade was great stock power is pretty weak. It’s a game changer lol. But seriously this is very worth it.

    (0) (0)
  2. Bruce (verified owner)

    What an awesome upgrade for this machine, My rider reports a huge power gain in all the right places. Proved it with an A class OA win over the weekend. Thank You

    (0) (0)
  3. Patrick Forster (verified owner)

    Excellent service. Very attentive and knowledgeable.

    Great product from TSP.

    (0) (0)
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Below are the make(s) and model(s) that will fit this part.

Year Make Engine CC Model
Year Make Engine CC Model
2023 Husqvarna 125 TC TBI
2023 KTM 125 SX TBI
2023 KTM 125 XC TBI
2024 Gas Gas 125 MC TBI
2024 Husqvarna 125 TC TBI
2024 KTM 125 SX TBI
2024 KTM 125 XC TBI

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