This heavy duty version of the original 254-SN5070 shifter solenoid is designed for hard shifting shifters. It also features a redesigned bracket for easier installation. Converts your B&M Pro Ratchet to a hands-free automated shifter for accurate and consistent shift points. The all electric operation means no Co2 bottle system or bottle maintenance required. Wires into any RPM activated switch, timer or push button and the solenoid operated shifter makes your 1-2 and 2-3 shift, without inhibiting your ability to shift manually. Simple circuit prevents accidental activation from park or neutral into gear. Includes Heavy Duty solenoid, safety switch, relays, handle attachment and brackets. B&M Shifter Not Included.