Arrma Mega/3S BLX Aluminum Motor Mount Set. This optional motor mount set uses a 6mm thick aluminum motor mount to add extra motor security and heat dissipation to the Arrma Big Rock, Granite, Senton, Typhon and Vorteks models. Using this motor mount allows you to fit up to a 36 series size motor. A composite gear cover is used to protect the pinion and spur gears from the elements. Package includes one motor plate, one housing, one gear cover and one flat head screw.