RIVA speed control unit (electronic engine release) for Kawasaki Ultra 300 and 310 jet ski This module removes the restrictive speed control feature on the Kawasaki Ultra 310 and 300 models, offering a significant increase in maximum speed with the standard ECU. The easy-to-install module allows for the storage of boats from 3 to 4 mph and increases top speed with changes to...

ENGINE TACHOMETER (PET-2100DX) (OPPAMA) from 1 to 4 cylinders Quick to install and remove, the PET-2100 DX tachometer is at the cutting edge of technology. The processor updates the engine rpm counter 20 times per second and has an accuracy of 10 RPM. Product of the Oppama brand, compatible with watercraft with a 2-stroke engine, 1 to 4 cylinders.