Description Motor Controller Upgrade Speeds up to 19 MPH (PDP), 24MPH (IQ). Up to 30% torque increase. Admiral motor (MOT-A2) 9.0 peak HP. Alltrax controller (CON-XCT500IQ) 500 AMP. Diode 3 AMP for solenoid (CON-004). Resistor precharge for 48V 400 AMP solenoid (CON-035). Heavy duty solenoid 400 AMP 48V (SOL-1022). Mild Hills