A complete enclosed crank trigger ignition for MSD programmable DIS or Magneto. RCD's enclosed crank trigger allows for multiple timing adjustments and fits all RCD Small Block Chevy and LS gear drives, as well as Gaerte 4 cylinder and Summers/Shavers gear drives. Two trigger pickups are clamped in aluminum brackets with +/- 10 degrees of adjustment, an additional third timing may be set at the magneto. Complete assemblies including the water pump drive and crank bolt (sold separately) weigh less than 3 lbs and space the pump forward less than 2 inches.