S&S^® 4-1/4" Stroke Flywheel Assembly For S&S^® V80 and 1984-'99 HD^® Evolution^® Carbureted Big Twin Engines

Item #: 32-2239

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$1,550.95

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This 4-1/4" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels in S&S^® 80" V80 engines and in 1984-'99 HD^® Evolution big twins. Balanced to stock 80" cast pistons. Flywheels are CNC machined from heat-treated, closed die, steel forgings, and are stronger than cast iron or late style steel flywheels. Dynamically balanced and fully assembled with premium quaility S&S^® mainshafts and heavy duty 7.440" connecting rods.

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IMPORTANT: 1977–’89 style pinion gears, spacers, and nuts are required when installing S&S flywheel assemblies. For installation in 1990–’99 or scratch built engines, order S&S Pinion Shaft Conversion Kit 33-4148. S&S flywheels are no longer available machined for stock Harley-Davidson® main shafts. 4¼" stroke assembly is balanced for stock HD® 80" pistons. 45/8" stroke assembly is balanced for S&S stock bore and 35/8" bore stroker pistons. Use special order Part # for flywheels balanced to other pistons or rods. All S&S crankcases for 1984–’99 big twin engines are machined to accept a crank position sensor and can be used with these flywheels.