This piston based internal combustion engine for mecha weighing 30-45 tons is a relatively new entrant on the market and is named after the four oversized hemi-cylinders featured on its block. It gives a speed boost of +17. Similar to the type of turbocharger motor you would use to run a monster truck but adapted for mecha use, the FourBanger isn't the most environmentally clean engine out there but that turns out to be one of its tactical advantages. The unleaded biodiesel fuel used by the FourBanger burns dirty and blasts exhaust smoke at your opponents, slowing them down by 1.
For 400 Ferrite, 1169 Bioptics and 35 Crystal, make sure to have the thrush pipes angled away from you, then you're ready to lock and load.
Submitted by Mycobacter