S&S 80" Piston Set 3-1/2" +.010" 9:1 Harley-Davidson Shovelhead 1979-1984

Description

S&S 80" Piston Set 3-1/2" +.010" 9:1 Harley-Davidson Shovelhead 1979-1984
Product Details
The modern alloys used in these pistons, coupled with the advanced skirt profiles, result in low engine noise and long engine life, something that in the past could only be achieved with cast pistons. The 80" pistons may be used together with 4-1/4" flywheels to build mild stroker engines for 1936-'78 Big Twins. However these pistons are only available in 3-1/2" bore, so 74" cylinders will need to be bored to 80" standard bore of 3-1/2".
NOTE: Does not fit 1984 Evolution engines.
Fit Guide
Model
80" Piston Set
Bore
3-1/2 in.
Compression Ratio
9:1
Country of Origin
USA
Displacement
80 in.
Piston Type
Forged
Size Over Standard
.010 in. Over Stock
Product Fitment
This item fits the following applications:
Harley-Davidson
Shovelhead
1979
Harley-Davidson
Shovelhead
1980
Harley-Davidson
Shovelhead
1981
Harley-Davidson
Shovelhead
1982
Harley-Davidson
Shovelhead
1983
Harley-Davidson
Shovelhead
1984
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