ITEMS ORDERED IN STOCK ARE SENT EVERY DAY 12PM. Orders placed before 9AM go the same-day!
$0.00 / 0 items
TSP ERM Power Kit – suits 2018-2023 250TPI models

$1,102.18 ex GST

TSP ERM Power Kit – suits 2018-2023 250TPI models

$1,102.18 ex GST

TSP ECU Reflash Module (ERM) - Suits all TPI & TBI Models

In stock

TSP Billet Head - KTM 250 and Husky TE250 17 onwards (TPI)
Compression Ratio
KTM/Husky/GasGas Idle Bolt & Spring

In stock

BPR8EIX TPI NGK Iridium Spark plug

In stock

In stock

Below items are additional extras:
1 × TSP Head insert - suits TSP Billet Head from 2008-2023 KTM 250 and Husky 250 Carb/TPI Models
Compression Ratio
Extra TSP inserts are discounted down when ordered with a TSP Power Kit (The TSP power kit head already includes an insert). This gives you the option to run two different compression ratios for different riding styles.

Introducing a world first in two-stroke tuning with our brand new package

The TSP ERM (ECU Re-flash Module) Power kit!

This will suit all 250TPI KTM ‘Group’ models from 2018-2023 (KTM, Husky & GasGas Models).

PLEASE NOTE: 2018-2019 models will require an additional adapter cable which you will need to add to the order by ticking it below

This package will transform the power delivery of your 2018-2023 TPI, it includes the following:

  • 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 CLICK HERE).
  • A Billet TSP machined cylinder head in Low, Medium, High or Very High compression ratios (see the bottom of the page for explanation)
  • Cylinder head o-ring & washer kit (Included in every TSP head or insert standard)
  • A new NGK spark plug, better heat-range suited to the improved power the engine makes with this kit
  • TSP Idle bolt mod package (Bolt and Spring) so you can set your idle speed correctly after setting your air screw

**Free Downloadable TSP ECU tune: As an example, This means if you buy/have an injector relocation kit at the same time as setting up your ERM, you will be able to download the correct tune to suit it. We list every type of tune to suit our products when doing the ERM setup.

This package intends to replace our current ECU re-flash service, meaning you no longer have to post in your ECU. This means no down-time on your bike! Further to this, you now get a handheld device that has the ability to show live data, read and clear fault codes, data log, make fuel/ignition/oil changes (with Pro or Pro+ mode activated) plus much more! The ERM also alo comes with a mount kit so you can have it mounted to your handlebars, or it can be used handheld and easily kept in a toolbag.

This package makes an astonishing difference to the TPI, and when you download your free TSP Map to your bike on your ERM device, you will achieve:

  • Much more torque at low/mid revs, where you need it most, with a nice increase in power higher up in the rev range as well.
  • Drastically improved 0-1/2 throttle performance
  • More oil than the stock maps for improved reliability
  • 2 ignition maps: Hard and Soft. The stock map switch works like normal to select between the customised maps, or you can use our TSP Map switch. The hard map is our standard ‘full tune’, while the soft map is designed for really soft inputs in harsh conditions, or deep sand riding to help protect your engine.
  • Much smoother, crisper power deliver at part throttle.
  • Much less ‘pipe bang’… this is the annoying “dang, dang, dang” noise the engine makes on deceleration. Its generally harmless but very annoying and makes some stock TPI bikes unpleasant to ride at times.
  • Safer air/fuel ratios at high rpm and large throttle openings so the engine is safer during prolonged high speed running
  • Better throttle response
  • You can ride in a higher gear with lower revs in many situations and use the extra low end torque to get you places with less wheel spin and much less clutch work
  • Ability to tune/adjust your own oil/fuel/ignition maps with our Pro or Pro+ Modes.

There is no risk to reliability with this setup! The ignition maps, air fuel ratios and combustion chamber designs are similar to those we have run very successfully for years.

In order to have the skills to adjust the stock ECU data, we have spent hundreds of hours developing our own process for accessing, changing and reloading the ECU data. TSP was the first to develop a tuned package for the TPI bikes and we have years of experience testing and tuning fuel injected 2 strokes prior to the release of the TPIs in 2018. Now we have achieved a product that puts the power literally in your own hands!

The ERM unit pairs with your standard ECU,  and all ECU features work normally including oil injection, fan and warning lights.

We supply fitting instruction plus recommended settings for the air screw and power valve preload.


The 250 TPI kit is available in the following combustion chamber designs:

  • LOW COMPRESSION (suits EXC/XC and TE/TX models): This new Low comp design is slightly lower than the previous Med comp 250 design. It is best used for applications where the engine is revving very hard OR where there isnt much need for extra bottom end power. It is higher comp than the stock EXC/TE enduro heads and it is suited to the enduro models only.
  • MEDIUM COMPRESSION (suits EXC/XC and TE/TX models + high revving SX/TC Models): The new Med comp insert is slightly higher than the previous Med comp insert. It is the best all-round design for the majority of enduro riders from 0-1000m. It can also be used on the SX/TC models where they are revving very hard and require smooth mid and lots of overrev.
  • HIGH COMPRESSION (suits mainly SX and TC models, or enduro over 1000m elevation): The new High comp design is slightly higher than the previous high comp design. It is best suited to SX/TC models as it is only slightly higher than the stock SX/TC heads. It can also be used on the enduro models at altitude above 1000m. Customers wanting hard hitting power like a 300, can also run this at sea level but some may find this too aggressive
  • VERY HIGH COMPRESSION (All models above 1500m elevation): The new Very High comp insert is designed for use at high elevation only. It can be used on either SX/TC or EXC/TE models above 1500m.

Minimum ERM operating specifications:


* Windows 10 (64-bit) or newer
* Wifi network interface
* RAM: 2 GB or higher
* HDD: 100 MB of available disk space


* MacOS Big Sur (version 11) or newer
* Wifi network interface
* RAM: 2GB or higher
* HDD: 300MB of available disk space
* Supports both Intel and ARM64


* Map adjustments on the TSP ERM are available after purchasing the optional Pro or Pro+ Modes on 

Additional information

Weight1 kg