TSP TBI Power Kit – 2024+ KTM/Husky/Gas Gas 300cc XC-W, TE and EC TBI Models

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The 2024+ KTM/Husky/Gas Gas 300cc XC-W/TE/EC TBI (throttle body injection) Power Kit includes a billet TSP head (cap and insert), reflash of your stock ECU with improved fuel maps, advanced ignition, more refined power valve settings, 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.


Your bike's VIN# is needed for all ECU Re-flashes. Typically 17 characters and can be found on the bike's frame steering tube or registration/pink slip.
Crank Case Pressure Sensor (×$55.00)
NGK Spark Plug - highly recommended! (×$15.00)
Additional Medium Compression Insert (×$150.00)
Additional High Compression Insert (×$150.00)

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SKU: PWRKIT+TBI-XCW-300 Category:


This package fits all 2024 KTM 300 XC-W, Husky 300 TE and Gas Gas EC 300 models with the new 300 TBI (Throttle body injection) engine.

The models include:

KTM 300 XC-W 24-on

Husky TE 300 24-on

GasGas EC 300 24-on

This listing does not fit SX/XC/TX/EX models, as they require different head inserts and different ECU tunes. Please see our other listings for these models

This 2024 300 XC-W/TE/EC package includes:

  • A Billet TSP Head (Cap and Insert)
  • Reflash of your stock ECU with improved fuel, ignition and power valve settings as well as more oil. Both Map 1 (White) and Map 2 (Green) have been tuned and there is a big difference in power delivery between the two maps.
  • Head O-ring & Washer Kit
  • A new NGK BPR8EIX spark plug, better suited to the improved power the engine makes with this kit

The new 2024 XC-W engine is very smooth in stock form, but also very soft in its power delivery at all throttle positions. On the dyno it is one of the softest 300s we have seen in a number of years, only making 45rwhp at peak power, compared to the previous TPI models at around 49 and the new 300XC TBI at 57. Likewise at low throttle and low/mid revs its still very smooth but lacking in torque which actually makes riding in some situations much more difficult. When testing a stock 2024 300 XC-W side by side with a 2022 300 TPI with TSP head and ECU in Romania in July, 2023, we found that the TSP tuned TPI was much easier to ride in challenging hard enduro conditions because it allowed you to ride a gear higher in most situations, using lower revs and less wheel spin, and as a result it was able to lift the front and tractor up tricky sections far easier with less throttle and less effort.

The aim for developing this new power kit for the 2024 bike was to increase low end torque and pulling power while maintaining excellent traction and smoothness. On the dyno, the new TBI with our Power Kit is now a match for the modified TPI everywhere up to 7000rpm. The new 2024 bike with the TSP Power Kit is now an absolute pleasure to ride with the extra grunt the power kit offers, plus the extra smoothness that the TBI engine gives. The overall result is a powerful yet very smooth engine which is easy to ride in almost any conditions. We firmly believe that this new 2024 bike, once modified with the TSP Power Kit, will become the new standard for offroad bikes in the market… it really is an exceptional package of engine, chassis, suspension and ergonomics that leaves previous models behind.

This package makes a huge difference to the 300TBI over stock, with some key features being:

  • Drastically improved throttle response throughout the whole RPM range
  • Both Green & White maps are tuned and the stock map switch (if installed) works like normal to select between the customized maps.
  • Smoother throttle response
  • Much better part throttle and low rpm power
  • Better fueling; some areas are crisper than stock for better throttle response, and some areas are richer for improved reliability.
  • Much more enjoyable to ride in virtually any conditions.

As usual we offer a range of cylinder head options for this Power Kit:

  • MEDIUM COMP – this head suits the majority of trail riders and hard enduro racers who want better bottom and mid power and a small gain up top as well. The power delivery is much stronger and more tractable than stock but still super smooth and suits a wide range of riding conditions. Works with 91 octane fuel.
  • HIGH COMP – this head suits riders who want harder hitting power everywhere, especially down low. It completely transforms the TBI into a trail weapon. This head may push the limits of normal 91 octane pump fuel at sea level under certain extreme conditions, but it can be used in normal trail riding conditions safely in order to achieve maximum bottom/mid performance. This head can be used at elevations above 3,500′ to approximately replicate a medium compression head at sea level.

All TSP mods are designed and dyno tested in-house at TSP so you can be sure you’re getting reliable performance and a quality product.

Note: In order for us to reflash your 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 ECU without the VIN #.

14 reviews for TSP TBI Power Kit – 2024+ KTM/Husky/Gas Gas 300cc XC-W, TE and EC TBI Models

  1. chris b. (verified owner)

    High quality products and professional customer service.Would definitely recommend.

    (1) (0)
  2. Nickolas Wortham (verified owner)

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  3. Michael B. (verified owner)

    Fantastic transaction from start to finish. They accommodated me on a faster shipping option and we’re in contact the entire way. The tune and head are absolutely fantastic on the new 300 XC-W. This is the way this bike should’ve been shipped from KTM. Thank you South Bay!

    (1) (0)
  4. Kyle Hearn (verified owner)

    Exceptional customer support!!

    Image #1 from Kyle Hearn
    Image #2 from Kyle Hearn
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  5. Jason King (verified owner)

    Highly recommend kit , great service

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  6. Scott J. (verified owner)

    This head and reflash really woke my bike up and made it feel like a 2 stroke should. The guys at South Bay Performance were helpful with my questions and were super fast on the reflash and return.
    I was really disappointed with the performance of my 2024 KTM 300 xc-w from the factory but this power up kit really brought my bike to life and I love it now. Thank you South Bay Moto Performance. Great company to deal with and a great product…

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  7. Anonymous (verified owner)

    Excellent price, service and follow. Do not use any other shop. South Bay is your only choice.

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  8. Allen (verified owner)

    Bike needed help and kit woke her up. Bike rips and conquers all hills.

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  9. Ryan Sanny (verified owner)

    Bike runs great now!

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  10. Edward Wolfe (verified owner)

    A little scary trusting to the mail and all but. what a fantastic investment. So glad I got the upgrade. Night and day with my 2024 XC-W 300. Was actually a fairly fast and easy turn around. Would recommend and do it again.. Ed W.

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  11. Anonymous (verified owner)

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  12. John Morrow (verified owner)

    Woke my 2024 KTM 300 XCW up! Best mod I’ve done to the bike. Highly Recommend!!!!!!

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  13. Joshua Z. (verified owner)

    Great customer service from steve. Quick shipping. Good product. Will recommend

    (0) (0)
  14. ROGER (verified owner)

    2024 Husqvarna TE300i pro
    great stuff. Mixture is good now. Great fuel economy, increase in power!

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

YearMakeEngine CCModel
YearMakeEngine CCModel
2024Gas Gas300EC TBI
2024Husqvarna300TE TBI
2024KTM300XC-W TBI
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