MSD 6CT Pro Circle Track Ignition Box 12,000 RPM 6428

Circle track racing demands an ignition system that delivers consistent spark energy lap after lap, without compromise. The MSD 6CT Pro eliminates guesswork with adjustable start retard, real-time performance monitoring via LED display, and fully potted construction built to survive the vibration and heat of competitive racing. Whether you're running a 4, 6, or 8-cylinder engine, this plug-and-play ignition box gives you the reliability and precision control needed to stay competitive.

• Built-in start retard: 0°, 10°, 20° increments
• LED display: Rev limit, peak RPM, cylinder select, start retard, battery voltage, tach mode
• Compatible: 4, 6, 8-cylinder engines
• Housing: Fully potted, race-proven durability
• Wiring: Single plug-in connector
• Max RPM: 12,000
• Secondary voltage: 45,000 volts
• Spark energy: 135mJ (Blaster) / 150mJ (HVC)
• Primary voltage: 535V (Blaster) / 550V (HVC)
• Spark duration: 20° crankshaft rotation
• Current draw: 0.8A per 1,000 RPM
• Voltage range: 6–18 volts
• Dimensions: 7.89"L × 4.00"W × 1.87"H
• Weight: 2.5 lbs
• Warranty: Limited 1 year
• MPN: 6428