Jetting for KTM 2T Dirt Bikes

Exact jetting for your two-stroke, a mix calculator, weather from the nearest station and a logbook that learns how your bike runs. 27 models, 2005-2027.

This app provides, using temperature, altitude, humidity, atmospheric pressure and oil-mix ratio, a recommendation about the jetting configuration to use for KTM 2-strokes MX and enduro bikes (SX, SXS, EXC, XC and MXC models), from 2005 up to the 2027 minicycles.

Every recommendation starts from the reference setup for that model and model year, and is corrected by the air density of your conditions. It is not a rule of thumb from a forum: it is a starting point worked out for the day in front of you.

In order to get the weather values, the application can use the location service (GPS or WiFi) to obtain the position and altitude, and the network connection to get the temperature, pressure and humidity from the nearest weather station. Nevertheless, the application can run without GPS, WiFi and internet connection, in this case, the user has to give the weather data.

What you get:

• Main jet, needle type and clip, pilot jet and air screw, calculated from the air density for your conditions.
• Weather from the nearest station in one tap, or typed in by hand when there is no coverage.
• A logbook of your rides: what the app recommended, what you actually fitted, and how it ran, rated separately for the low, mid and high circuits. Export as CSV or move it to another phone.
• Mix calculator: how much oil to add to the petrol you are about to mix, or the other way round, with petrol and oil each in the unit you like. One button takes the resulting ratio into the calculation.
• Fine tuning to adapt the recommendation to your own engine.
• Air density and density altitude, always on screen.

The app lets you use different measure units: ºC and ºF for temperatures, meters and feet for altitude, mb, hPa, mmHg and inHg for pressures, and kg/m³, lb/ft³ and lb/gal (US) for air density.

No ads, no tracking, no account. Every calculation runs on your device, so the app works at the track with no coverage: you only need a connection if you want to pull the weather from the nearest station.

Valid for the following models from 2005 to 2027:

• 50 SX: 2005-2027.
• 50 SX Factory Edition: 2021-2026.
• 50 SX Mini: 2017-2023.
• 65 SX: 2009-2027.
• 85 SX: 2005-2027.
• 105 SX: 2006-2012.
• 125 SX: 2005-2022.
• 125 SXS: 2005-2007.
• 125 EXC: 2005-2016.
• 125 XC: 2017-2018, 2021-2022.
• 125 XC-W: 2017.
• 144 SX: 2007-2008.
• 150 SX: 2009-2022.
• 150 XC: 2017-2019.
• 150 XC-W: 2017.
• 150 XC USA: 2010, 2012-2014.
• 200 EXC: 2005-2016.
• 200 XC: 2005-2012.
• 250 SX: 2005-2022.
• 250 SXS: 2005-2007.
• 250 XC: 2007-2009, 2011-2019.
• 250 XC-W: 2017.
• 250 EXC: 2005-2018.
• 300 EXC: 2005-2018.
• 300 XC: 2009-2018.
• 300 XC-W: 2017.
• 300 MXC: 2005.

• Please note that the application is valid only for engines that use a carburetor. Not valid for fuel injection engines.