Features Quick-change Braid Fast replacement of braid. No tools required. Magnatraction Adjustable down-force positions High detail. Configuration Motor Mabuchi SP 18k rpm Gear ratio 11:36 Chassis Rear Mounted Motor Sidewinder 2 wheel drive Magnet Rectangular 2.5 mm Down-force 280 gm Overall length 155 mm Wheelbase 81mm Axle/Hub width 62 mm Front 62 mm Rear Tyre diameter 21(ext), 14(int), 12 mm Front 21(ext), 14(int), 12 mm Rear Weights Car 89 gm Case 156gm Scale = 1/32