TORPEDA PRO UPGRADE HI8202M SPECIFICATION LENGTH: 490 MM WIDTH: 305 MM HEIGHT: 190 MM WHEELBASE: 325 MM Highlight Steering servo, make center lower Drustable Elasticity buffer spring Flexuose 6061 aluminum chassis, thickness:2.5mm Six holes make air to be circumfluence, air-pressure more uniformity and less air bubble Bouding wall prevent leaking Easily to refuel with super calibre 2 way gear regulate holes The all-metal disc type brakes and lining with 13.8g super-light-weight flywheel, make the engine smaller in load Gear box with 5pcs of screw only, fixing/disasembling is easy Adrustable-bounce, make spring buffered Upgrade Option Carbon fibre up-plate All-metal oil pressure type shockproof device Byte ten universal drive shaft All-metal exhaust pipe Ball bearing for whole vehicle IS INSTALLED FOR BONUS! Exhausting backward engine (need to match platform starter or bacilliform starter)