Small box, big spark

Ignition Boxes

Capacitive discharge Ignition Controls designed with modern digital circuitry for reliability and performance you can trust

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PerTronix Ignition Boxes

The PerTronix line of Ignition Boxes offer the very best in Ignition technology. The Digital HP, Second Strike, and Digital Rev Limiter offer more unique features at a competitive price than any other brand in the industry.


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PerTronix Digital HP Shop Now
PerTronix Second Strike Shop Now
PerTronix Digital Rev Limiter Shop Now
PerTronix HP Bundles Shop Now

Product Highlights

Digital HP Ignition Box

The Digital HP represents our dedication to innovation in the Ignition technology space. An ultra-small form factor provides more installation options and the simple digital interface accommodates quick and easy adjustments. However, there is nothing small about the 187 mJ of spark energy or exclusive features found only in the Digital HP. 50 State Emissions Legal C.A.R.B. E.O. #D-57-37.

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Second Strike

Second Strike is the only ignition system to provide a powerful second spark throughout the entire RPM range. Other multiple spark discharge systems typically revert to one spark at about 3000 RPM. The "Second Strike" is a microcontroller based ignition supplement that works with most inductive type systems. Following the primary spark, the Second Strike delivers a powerful capacative discharge second spark resulting in more complete combustion.

  • Increased burn time increases horsepower and torque at high RPMs
  • Unique CAO feature adjusts the timing of the second spark
  • Built-in digital REV limiter with high resolution
  • Digital rotary switches permit easy adjustment
  • Adaptive voltage feature prevents overdriving ignition coil
  • Voltage protection prevents damage from reverse polarity
  • Tachometer output with TTL interface and near 50% duty cycle make our limiters compatible with most modern tachometers
  • Legal in all 50 states and Canada. (C.A.R.B. E.O. #D-57-22)
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Digital Rev Limiter

Flame-Thrower Digital REV Limiters work with most even fire 4, 6 or 8 cylinder engines using points, OEM electronic or aftermarket inductive type ignition systems, including our own Ignitor and Ignitor II points replacement systems. This digital microcontroller based unit provides a much greater accuracy (+/- 0.01%) over analog systems.

  • Easy to use rotary switches permit settings with a resolution of 100 RPMs
  • Tachometer output with TTL interface and near 50% duty cycle make our limiters compatible with most modern tachometers
  • Reverse voltage protection
  • Conformal coated surface mount PCB for reliability
  • Easy four wire hookup
  • Compact size: 3"L x 2.5"W x 1.4"H
  • Lightweight .75 LBS
  • Legal in all 50 states and Canada (C.A.R.B. E.O. #D-57-22)
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Tech Resources

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Our qualified team is always here to answer your questions at 909-599-5955

PerTronix Ignition Catalog

Full color catalog with part number reference


PerTronix Tech Series: Installing a DIgital HP Ignition Box