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S&S Cycle 3-1/2in +.020in 80in Forged Pistons fits 1979-1984 Harley-Davidson FLH / 1980-1984 Harley-Davidson FLHS Electra / 1984 Harley-Davidson FLHX / 1980-1983 Harley-Davidson FLT Tour / 1981 Harley-Davidson FLTC Tour

⚠️ Please verify fitment before purchasing. Check the fitment chart below or use the Year/Make/Model tool to confirm this part fits your vehicle.

⚠️ Verify fitment before purchasing. Check the fitment chart below or click the 3 lines in the top left menu, select Home, then use the Year/Make/Model guide.

S&S Cycle
106-5513
In stock
$410.99 USD

NOT CARB LEGAL

$410.99 USD

S&S Cycle 3-1/2in +.020in 80in Forged Pistons fits 1979-1984 Harley-Davidson FLH / 1980-1984 Harley-Davidson FLHS Electra / 1984 Harley-Davidson FLHX / 1980-1983 Harley-Davidson FLT Tour / 1981 Harley-Davidson FLTC Tour
These 3-1/2" +.020" bore pistons fit 1979-'84 80" HD® big twin engines, producing 8:1 compression with stock unmodified cylinder heads.. The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life. In the past, this could only be achieved with weaker cast pistons. S&S® will fit these pistons to your existing cylinders (when purchasing new cylinders, pistons can be fit to them as an option).

This Part Fits:

Year Make Model Submodel
1979-1984 Harley-Davidson FLH Electra Glide Base
1980-1984 Harley-Davidson FLHS Electra Glide Sport Base
1984 Harley-Davidson FLHX Electra Glide Special Base
1980-1983 Harley-Davidson FLT Tour Glide Base
1981 Harley-Davidson FLTC Tour Glide Classic Base
1982-1983 Harley-Davidson FXR Super Glide II Base
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