Jetting for Gas Gas 2T

Jetting for Gas Gas works out the carburetor settings your two-stroke needs for the conditions you are actually riding in. Enter the temperature, altitude, humidity and atmospheric pressure, pick your bike and your oil mix, and the app gives you the main jet, the pilot jet, the needle and its clip position, and the air screw setting. It also shows the air density and the density altitude. WHERE THE NUMBERS COME FROM The recommendation is built from the carburetor tables and the factory reference settings that Gas Gas publishes in its own owner's manuals and parts catalogues, fitted against air density. It is a starting point, not a substitute for reading your spark plug. BIKES COVERED (208 model-years, 2002 to 2026) EC 125, 200, 250, 300 · MC 50, 65, 85, 125, 250 · SM 125, 250 · TXT 125, 200, 250, 280, 300 · Pampera 125, 250, 280 Only two-strokes with a carburetor. Fuel-injected models (EC 250/300 from 2021, MC 125/250 from 2024) are not included, because there is nothing to jet. WEATHER WITHOUT A WEATHER STATION The app can pull temperature, pressure and humidity from the weather station nearest to you, and your altitude from the GPS. No extra hardware, no manual readings. You can also type everything in by hand. IMPERIAL OR METRIC Celsius or Fahrenheit, metres or feet, mb, hPa, mmHg or inHg, kg/m3, lb/ft3 or lb/gal. Pick what you are used to. MIX CALCULATOR How much oil goes into the fuel you are about to mix, or what ratio you ended up with from what you already poured. Litres or gallons, millilitres or ounces, percentage and 1:n side by side, and one button that drops the ratio straight into the jetting calculation. RIDE LOGBOOK Save what the app recommended with one tap, then note what you actually fitted and how it went — lean, good or rich, rated separately for the low, mid and high circuits. Over a season the logbook tells you whether your bike runs above or below the book. Export to CSV, or move it to another phone. FINE TUNING If your engine likes it a bit richer or a bit leaner than the book, shift the whole recommendation by up to 10 per cent and the app will remember it. The values shown are a base reference. Always check the spark plug and adjust to your engine, your fuel and your riding.