Underneath the truck body is a 3mm anodized aluminum chassis with a center brace to maximize strength. The heavy-duty 4X4 drivetrain features durable steel drive shafts plus all-metal diff outdrives and gearbox internals. The center diff module can be removed by taking out just five bolts, making maintenance as fast as the INFRACTION 6S BLX truck itself. A sliding mount allows quick, easy motor access, and dual XL battery trays are included. Big bore, oil-filled shocks on black-anodized front and rear shock