Descrizione he Serpent Viper 990e R is the ultimate 1/8th EP racing platform. Built on the highly successful 990e EVO, the 990e R meticulously improves performance, quality and ease of use. It features an all-new chassis, new and lighter ackermann lever, upgraded rear bulkheads, improved rear anti-roll bar mounts, a new bumper, and a host of enhanced, user-friendly details for even better performance, reliability and ease of use.