TSP ERM - ECU Reflash Module

TSP TBI ERM Power Kit – KTM / Husky / Gas Gas 125cc TBI

The TBI ERM Power Kit for 2023+ KTM/Husky 125cc TBI (Throttle body injection) includes a TSP ERM device, billet TSP head (cap and insert), a head O-ring & washer kit, and an NGK spark plug. TSP Power Kits offer the best performance gains for all late model fuel injected two strokes.

The ERM is the only method available for tuning the 125 TBI ECU. There is not a re-flash of the ECU available.

With the purchase of an ERM, you DO NOT need to ship us your ECU. Once you receive the ERM, you will use the ERM to download the correct maps for your bike, and you will flash your own ECU using the ERM.

NOTE: We are currently backordered on 125 heads. The Power Kit is still available on backorder. We will ship out the entire kit when we receive the heads.


Available on backorder

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This TSP TBI ERM Power Kit fits 2023+ KTM, Husky and Gas Gas 125 models with the new 125 TBI (Throttle body injection) engine.

This package includes:

  • A handheld touchscreen ERM device which comes with a free downloadable TSP ECU Tune to suit your bike & relevant TSP modifications. For a full breakdown of this product, check out the TSP ERM website.
  • A Billet TSP Head (Cap and Insert)
  • Thicker base gasket to suit TSP’s combustion design
  • Head O-ring & Washer Kit
  • A new NGK BPR9EIX spark plug, better suited to the improved power the engine makes with this 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.

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.


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

YearMakeEngine CCModel
YearMakeEngine CCModel
2023Husqvarna125TC TBI
2023KTM125SX TBI
2023KTM125XC TBI
2024Gas Gas125MC TBI
2024Husqvarna125TC TBI
2024KTM125SX TBI
2024KTM125XC TBI
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