Mallory 639-4 HyFire IV Launch Stage Controller Kit Adj 2000-9000 RPM DRAG RACE

MALLORY 639-4. Condition: New.

Launch Control; HyFire IV; Stage Controller; Adjustable From 2000-9000rpm In 200rpm Increments NOTE: Stage control is intended to be used with Mallory #692 RPM
limiting ignition system or #619L RPM limiting accessory