
MSD IGNITIONPART NUMBER: 121-8734
2-Step Launch Master RPM Controller Ford 4.6L Mod Motor
$33395$371.95You Save$38.00
2 left in stockFord
- 2-Step Launch Master RPM Controller
- Ford 4.6L Mod Motor
Adjust rpm with (2) built-in rotary dials ranging from 1,800-9,900 rpm in 100 rpm increments. - LED shows when the launch rev limit is active.
- Easily set a launch rpm for consistent holeshots
- Connects to the factory coils for easy installation
- The best way to launch hard
- For Standard or Automatic transmission vehiclesNotes:
- For use on Coil-on-Plug systems only
- Not legal for sale or use on pollution-controlled vehicles.
- Easily set a launch rpm for consistent holeshots
- Connects to the factory coils for easy installation
- The best way to launch hard
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 TypeRPM Limiter
BrandMSD IGNITION
Package Height2.8
Package Width6.1
Package Length10.4
Weight0.75 PG
Part CategoryPerformance Parts
Includes Starting Line Rev LimiterYes
Rev Limiter2-Step
QuantitySold Individually
Module Selector MaterialPlastic
Part FitmentSemi Universal
Includes High End Rev LimiterYes
Includes Burnout Rev LimiterNo
Module Selector FinishBlack
Vendor Part Number8734
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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