MSD 6427 - 6CT Ignition Control

MSD – 6CT Ignition Control | Circle Track

The MSD 6CT Ignition Control is a rugged, tech-friendly circle track ignition engineered to survive harsh racing environments while delivering the smoothest, most reliable spark control MSD has ever produced. Designed specifically for circle track racing, the 6CT combines advanced digital ignition control with a durable, epoxy-filled aluminum housing.

A large, easy-to-read LED display and laser-etched rotary dials make setup fast and precise—allowing racers and tech officials to quickly verify rev limit settings. The microprocessor-controlled rev limiter is exceptionally smooth, helping keep the chassis settled when charging into the corners.

Features & Benefits

• Circle track specific design – Built for dirt and asphalt racing environments
• Smooth digital rev limiter – Virtually no chassis disturbance
• High output ignition power – 0.8 amps per 1,000 RPM
• Multi-engine compatibility – Works with 4, 6, and 8-cylinder engines
• Low voltage operation – Full spark energy down to 6 volts
• Built-in start retard – Adjustable at 0°, 10°, or 20° for quick starts and longer starter life
• Low current draw – Extends battery life during long race nights
• Rugged construction – Epoxy-filled, cast aluminum housing protects electronics
• Weather-sealed wiring – Single sealed connector keeps wiring clean and dry
• Tamper-resistant – Tamper-proof screws prevent unauthorized modification

Advanced Digital Functions

• LED display modes – Rev limit, highest RPM, cylinder select, start retard, battery voltage, or tachometer
• RPM recording – Stores highest RPM reached during the last 20 minutes of run time
• Easy adjustments – Three rotary dials for fast, tool-free setup

Output Voltage

• 535V with MSD Blaster Coil
• 550V with MSD HVC Coil (PN 8250)