These high compression pistons feature a 7cc raised dome to achieve a compression ratio of 11:1 (from 9.5:1). Higher compression is a key factor in increasing performance.
| |
Stock |
S&S 650 HC Kit |
| Bore X Stroke |
78 x 67.8mm |
78 x 67.mm |
| Compression Ratio |
9.5:1 |
11.0:1 |