TSP ERM Power Kit – Husqvarna KTM GASGAS TBI Models

This package suits all 2024 KTM ‘GROUP’ 300 EXC/XC-W models with the new 300 TBI (Throttle body injection) engine.

The models include:

KTM300 EXC/XC-W 24-on

Husky TE300 24-on

GasGas EC300 24-on

This listing does not suit SX/XC/TX/EX Models as they require different head inserts and different ECU tunes. Please see our other listings to suit these bikes. 

This 2024 300EXC package includes:

• A Billet TSP Head (Cap and Insert)
• A TSP ERM – See more information here: https://tsp-erm.com/product-features/
• Head O-ring & Washer Kit
• New Heat Range Spark plug

The new 2024 EXC 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 300EXC side by side with a 2022 300TPI with our head and ECU in Romania in July 2023 we found that the 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. On the track the new 2024 bike 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 almost any conditions. We firmly believe that this new 2024 bike, once modified with our 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 works like normal to select between the customised maps.
• Smoother throttle response
• ERM enables you the ability to make swift pre-set tune changes depending on conditions
• Much better part throttle and low rpm power
• Better fuelling; 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. Suited to 95 or 98 RON fuel (approx 89 or 91 in the USA).

For the first time since the release of the first fuel injected bikes back in 2018 we are offering 3 different ECU tunes to suit the 300 SX/XC models. This is because these bikes are being used in a wide range of conditions from high level MX through to Hard Enduro. The demands from riders on these engine is very broad and what is best suited to MX is not at all suitable to hard enduro. The 3 ECU tune choices that you can download on your ERM are:

• HARD ENDURO (HE) – The Green Map is the more aggressive of the 2 maps with White being softer.  Both maps give better part throttle power than stock but its delivered in a more useable manner. The green map revs out better for faster open sections or hill climbs, while the white maps is softer for very technical riding.
• TRAIL (TR) – The Green map is more aggressive and is taken from the MX Tune. The White Map is softer and richer and is taken from the HE tune. This is a very versatile tune which gives the rider a broad range of performance through both the green and white maps. This is ideally suited to trail riding or cross country racing where the rider occasionally wants a softer map for more technical terrain.
• MOTOCROSS (MX) – The MX Map basically has 2 aggressive maps… the Green map is the proper tuned map which get maximum performance, while the white map is a slightly softer/safer map with a bit more fuel and a bit less ignition advance and is ideally suited to higher compression heads or deep sand riding where the normal Green tune may be a a bit too crisp.

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.

* Map adjustments on the TSP ERM are available after purchasing the optional Pro or Pro+ Modes on www.tsp-erm.com.