These are a high compression piston for 1984 - ' 99 big twins with 12.5:1 compression 89" stroker kits and S&S Stock heads. These also fit 10:1 compression 1200cc Harley-Davidson® Sportster® models with S&S heads.
3 1/2" BORE FORGED PISON KITS FOR SUPER STOCK HEADS
|
| Displacement |
Stroke |
Piston
Deck Height |
Compression Ratio |
Part Number |
| Standard |
0.01 |
0.02 |
0.03 |
| 89" HC |
4 5/8" |
1.1875" |
12.5:1 |
92-2016 |
92-2017 |
92-2018 |
92-2019 |
