This system features an amazing ignition module capable of producing up to 20 amps to drive an all-new coil that can deliver more than 150 millijoules of energy. To handle this power and the larger coil, MSD designed a special cap and rotor made from DuPont Rynite.
Additional features include an adjustable rev limiter, built-in Traction Control Detection technology and an independent tach lead.
The Extreme cap and rotor will fit a stock HEI distributor, but must be used with an Extreme Output Coil Cover (sold separately).