The XR311 is a re-release kit that was originally available in 1977. It was Tamiyas first suspension equipped RC buggy. The 2012 re-release incorporates modern improvements while maintaining the basic layout of the original. Features: Scale: 1/12 scale Overall length: 405mm Overall width: 173mm Overall height: 135mm Clearance: 15mm Wheelbase: 260mm Tread (front/rear): 140/144mm Chassis material: duralumin 52S Steering tie rods: 2 segments of an equal length Suspension: front and rear double wishbone Caster angle (front/rear): 0 degree Camber angle (front/rear): 0 degree Toe angle (front/rear): 0 degree Dampers: none Drive system: rear wheel drive Diff. gear system: no Speed Controller: electronic speed controller (included) Tire width (front and rear): 29mm Tire diameter (front/rear): 75mm Tread pattern (front and rear): balloon tire Compatible with 7.2 volt stick-type battery packs. Realistic injection-molded body features cockpit details and a driver figure. Includes Tamiya electronic speed control-brushed type Required for completion; 2 Channel Radio System, 1 Servo, Battery and Charger, Tools for assembly