Everything for a home ECU flash on 2018-2020 RXT-X and GTX Limited 300 (ST3): a BUDS-capable cable and a single VIN license. A stock ST3 300 typically reaches 79-82 mph depending on conditions.
Expect faster acceleration, sharper throttle with less lag, a higher RPM limit, mild touring-mode changes and dramatic sport-mode changes. No extra license is needed if you later add an intake or supercharger to the same machine. The Torx DIY intake adds 1-2 mph and low-end pull; a custom 4-blade 159mm Solas impeller adds another 2-3 mph.
- Fits 2018-2020 RXT-X, GTX Limited 300
- Cable + 1 VIN license
- Stock ski: 79-82 mph
- No fee for later re-flashes
This listing sits in the 2020 Sea-Doo 300 RXT-X section of the shop, so buyers who browse by model year can find it quickly. Catalog reference: TORX-STG1-260-2-18.
