Distributor - Electronic Advance - with Rev Limiting - Fits Harley Big Twin - 1936-1969

Distributor, E-Spark, Breakerless, Rev-Limiter, Harley-Davidson

PART# A557

$586.95   Suggested Retail
$527.95   Your Price
Free Shipping
In Stock  


The A557 utilizes a fully adjustable electronic ignition module pre-programmed with 14 different advance curves and rev limits. These electronic advance distributors are compatible with both kick start and electric start applications and can be installed without any engine disassembly when used with stock cylinders and heads. Note: Must use carbon core spark plug wires, do not use copper core.


  • Billet Aluminum Construction
  • Can Be Installed Without Engine Disassembly
  • 14 Pre-programmed Advance Curves
  • Dual Fire And Single Fire Compatible
  • Made In The USA


Emission Code3
Product TypeMotorcycle
WarningCalifornia Proposition 65
WarrantyLimited 90 Day Warranty

Tech Resources


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

WARNING FOR A557: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

*Free Shipping & Handling only offered to the continental US on orders over $100.

Some parts are not legal for use in California or other states with similar regulations.