The J5-P3600 is a micro graviton drive which provides all of the propulsive force the EM-J5 requires. The drive has to modes of operation. Normal which provides a lower acceleration rate, and a maximum speed of 120 kph. It also has a high performance mode. This mode sacrifices energy efficiency for a higher acceleration rate and a maximum velocity of 240 kph.
While technically capable of achieving higher velocities in either mode, the J5-P3600 has an integrated governor which limits the maximum speed.