2-Stroke Jetting
Calculator
Altitude + temperature → needle clip position + main jet size.
Conditions
Altitude Guide
Sea level0 – 500 ft
Coastal / inland500 – 2,000 ft
Desert trail2,000 – 5,000 ft
High altitude5,000 – 10,000 ft
Enter altitude and temperature to get your jetting recommendation.
This calculator provides starting points for altitude jetting. Conditions vary — always test plug color, spark plug gap, and plug heat range. Consult your owner's manual and verify with a tuner familiar with your specific bike and elevation.