IST<sup>®</sup> Ignition Installation Kit for S&S<sup>®</sup> 41/8" Bore 1984-'99

IST® Ignition Installation Kit for S&S® 41/8" Bore 1984-'99

Item #: 55-1050
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$327.95
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FEATURES & BENEFITS

  • Modules can be set to kick-start or electric-start mode by an S&S dealer using the Super Stock diagnostic cable and software
  • Electric-start mode allows the pre-ignition cranking to be set anywhere from 1 to 4 engine revolutions (only available with current modules – earlier modules cannot be updated)
  • Pre-programmed ignitions are custom tailored for a specific S&S engine – no need for adjustments
  • Single fire operation – requires a single fire coil for single spark plug applications
  • Dual plugged applications require a pair of two tower coils or a single four tower coil
  • Minimum 3.0Ω primary resistance
  • Overload and short circuit protected
  • VOES switches to less aggressive curve under load or hard acceleration
  • 6300 rpm rev-limiter
  • 24-hour break-in rev-limiter – prevents damage during break-in
  • Data logging diagnostic capabilities

Click here to download the Super Stock® Kickstart Software

Fits: 4-1/8" Bore engines for 1984-'99 HD® Big Twins. S&S® IST Ignition Installation Kit Includes MAP sensor and crankshaft position sensor

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The S&S IST Ignition System is not recommended for kick start applications unless a cam position sensor is used. Engines using a crankshaft position sensor only will be difficult to kick start. We recommend our Super Stock® ignition system for kick start applications. 1984-’93 and some 1994 big twin models require minor wiring harness modifications.