Made in USA
Power Grid-7 Ignition Control Must be used with (121-7730 or 121-77303)
InfoVehicle Info Needed
MSD IGNITIONPART NUMBER: 121-7720

Power Grid-7 Ignition Control Must be used with (121-7730 or 121-77303)

$68795$764.95You Save$77.00
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Power Grid Ignition Control
    Power Grid-7 Ignition Control
  • Must be used with (121-7730 or 121-77303)

    Mounting Template

    Operating Specifications
  • Spark Energy: 200-220 mJ per spark
  • Primary Voltage: 545-570 volts
  • Secondary Voltage: 50,000 volts
  • Spark Series Duration: 20° crankshaft rotation
  • RPM Range: 15,000 RPM with 14.4 volts
  • Voltage Required: 12-18 volt (Negative Ground)
  • Current Draw: 1.3 amp per 1,000 RPM
  • Size: 7.5" L x 5" W x 2.25" H
  • Weight: 2.9 lbs

    Works in conjunction with 121-7730

    Note: Not legal for sale or use on pollution-controlled vehicles.




  • For use with Power Grid PN 7730 or PN 77303 only
  • High output spark for Power Grid System
  • Power Grid PN 7730/77303 mounts directly on top

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Part TypeIgnition Control Module
BrandMSD IGNITION
Package Height2.7
Package Width10.0
Package Length10.9
Weight4.45 PG
Part CategoryPerformance Parts
Current Draw1.3 amps per 1,000 rpm
Rev LimiterYes
QuantitySold individually
Overall Length7.5 in (190.5 mm)
Spark Output (Millijoules)200-220 Millijoules
Data AcquisitionYes
CircuitryDigital
Rpm15,000
Coil IncludedNo
Minimum Operating Voltage12 V
Ignition Box OutputCapacitive discharge
Cd Voltage Output To Coil545-570 V
Part FitmentSemi Universal
Timing RetardFive-stage
Ignition Box ColorBlack
Maximum Operating Voltage18 V
Vendor Part Number7720
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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