KartMAX PRO EVO
Jetting for Rotax MAX engines
$9.99 · Designed for iPad. Not verified for macOS.
Dial in jet, needle clip and spark plug for this weekend's weather — trusted by drivers at national and international championships every race weekend.
The Nº1 jetting app for all Rotax MAX engines, EVO included. Get the right jet, needle clip position and spark plug for Senior, DD2, Junior, Mini and Micro MAX — in seconds, matched to the weather at your track.
KartMAX PRO EVO is a must-have for teams, professionals, engine tuners and club racers. Thousands of drivers all over the world rely on it every race weekend, from club events to national and international championships.
Set up your engine once. From then on, the app reads the weather conditions at the racetrack and recommends the jet, needle clip position and spark plug reference for your exact engine and carburetor configuration.
COVERS EVERY MAX CLASS
• DD2, Senior, Junior, Mini and Micro MAX
• EVO and non EVO engines with MaxChallenge setup and other configurations
TAKES EVERY DETAIL INTO ACCOUNT
• Keep as many engine configurations as you want
• Selectable K98 or K27 needle (non EVO)
• 3.6 or 5.2 floats weight (non EVO)
• Idle jet and idle emulsion tube (non EVO)
• Selectable needle valve for non EVO DD2
• Selectable intake restrictor and carburetor spacer for Micro and Mini classes (non EVO)
• Adjustable floats height (non EVO)
• Independent delta adjustment for main jet and needle pin — calibrate your particular engine
• Support for Denso, NGK and NGK-IX spark plugs
• Selectable fuel octane
• Adjustable fuel/oil ratio with a mix wizard for the perfect mix
• Carburetor ice warning
• Fine tuning
• International configurations supported
WEATHER, AUTOMATICALLY
KartMAX PRO EVO obtains your position and altitude automatically and fetches temperature, pressure and humidity from the nearest weather station over the internet. On supported devices the internal barometer is used for extra precision. Need more accuracy? Connect the readings from your own portable weather station.
LEARN AS YOU TUNE
Built-in documentation, how-tos, video tutorials and official manuals.
Wondering if it really works? Thousands of drivers use our software every weekend at national and international championships. Although most of them would rather keep it a secret ;)
Questions? Contact us — we answer every message, we act on user feedback, and we race with KartMAX PRO EVO ourselves.
What's new in 4.0:
- Video tutorials now use an updated embedded player with a "Watch on YouTube" fallback.
- Documentation view has been modernized with improved link handling.
- Engine list automatically cleans up missing entries and restores defaults when needed.
- Improved connectivity checks and location permission handling.
- Stability and compatibility improvements for modern iOS.
The developer, Rafael Bartolome, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rafael Bartolome
- Size
- 113.7 MB
- Category
- Sports
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Uranus Software
