• +30% increase in HP and torque over stock
  • Short stroke for less vibration and longer engine life
  • Shorter than stock engine height for easy installation
  • Does not include carb or ignition; use stock or aftermarket carburetor and air cleaner
  • High volume, high-pressure (HVHP) oil pump
  • Durable S&S 3-pc. flywheels
  • Performance 585 cam & valve springs
  • 4-1/8″ x 4-1/8″ bore and stroke
  • 9.8:1 compression ratio
  • Black Edition, includes all the features of standard S&S engines, with gloss black engine covers in place of the standard chrome covers
  • Made in the U.S.A.
Engine Type



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