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Vehicle Info NeededMSD IGNITIONPART NUMBER: 121-8987
8987 Start & Step Timing Control For Use with High-Compression Nitrous Cars
$24595$273.95You Save$28.00
1 left in stock
Ships on Sep 08, 2026
Lowest Price Guarantee- Start & Step Timing Control
- For Use with High-Compression Nitrous Cars
Notes: - This unit replaces the 121-8982 control.
- Not legal for sale or use on pollution-controlled vehicles.
- Compatible with 4, 6 or 8-cylinder engines
- Accepts points, amplifiers and mag pickup trigger signals
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 TypeTiming Control
BrandMSD IGNITION
Package Height3.2
Package Width6.4
Package Length6.6
Weight0.65 PG
Part CategoryPerformance Parts
Controller ActivationProgrammable
Controls Ignition AdvanceNo
Ignition Box RequiredYes
QuantitySold individually
Part FitmentSemi Universal
Compatible With Multiple Coil IgnitionsYes
CircuitryAnalog
Controls Ignition RetardYes
AdjustableYes
Stages Of Ignition Retard1
Adjustment StyleKnob
Vendor Part Number8987
Package Qty1
Package TypeEA
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