HPI Racing RTR Nitro RS4 3 Evo Features: Completely assembled car T-15 engine with ABC construction and 2 needle carb djustable 2 speed transmission Aluminum tube header Composite dual chamber tuned pipe Sealed and removable radio tray Preglued D-Compound X-Pattern tires Tough shaft drive Full-time 4WD Limited slip front differential Assembled oil-filled coil over shocks 18 rubber-sealed ball bearings Airtronics radio system installed Tough prepainted and trimmed polycarbonate body included Countersunk aluminum chassis Large front bumper Sealed metal gear diffs Chrome plated wheels