DRL-400 Universal Kit for Harley-DavidsonThe Dynatek DRL 400 HD is a 2 stage rev limiter used for drag racing applications. Offering 2 independent rev limiters for launch and high side engine over rev protection the DRL 400 HD is a versatile rev limiter. The DRL 400 HD is designed for use with dual or single fire ignitions and is perfectly compatible with the Dyna S and Dyna 2000 ignition systems. It is also compatible with Twincam and Harley M8 ignition systems. It is not compatible with