Also introduced last year, the very special—for racing only—Rotax 600RS E-Tec engine gets updated with new calibrations, new hot start button and new stainless steel tuned pipe. The Rotax engine features E-Tec direct injection, that always delivers quick response and perfect calibration no matter the altitude or weather conditions so racers and their crew have one less thing to worry about. Other features include booster injectors first deployed on the Rotax 850 E-Tec, a short intake tract with double reeds and digital eRAVE. The new calibrations focus on improved acceleration, mid range power and easier use of the hot start feature. The new stainless steel tuned pipe contributes to the weight savings.
New in 2019 will be a throttle block with two positions that coincides with ECM updates allowing easy changes for Junior classes where the throttle is limited to 50 percent.
With all the power the MXZx 600RS produces, racers also need great brakes and the Brembo four-piston brake caliper mated to a stainless steel rotor delivers. For 2019 the rotor is 20mm larger in diameter for 15 percent more stopping power and better consistency in long races. The caliper is also repositioned for easier maintenance.
Chassis changes in addition to the lightweight Lexan hood and LED light include new engine mounts, new lighter belt cover with better airflow and new high flow left footrest vent.
The drive line is updated with a new, lighter drive axle, revised slip gear for better durability and new pDrive calibrations ready for the snocross track.
2019 MXZx 600RS Highlights