The top-rated Viper 90 with reverse is the supreme E-TON youth model in the Viper line. The EPA-approved four-stroke Viper 90R-4 is powered by an 88.4 cubic centimeter engine and is equipped with a USFS approved spark arrestor and adheres to emissions guidelines for a better environment. The Viper 90R supports multiple safety features and includes reverse gear capability for added mobility.
