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 |
Piston, Kit, High Compression, Royal Enfield 650 Twin
Brand: S&S Cycle
Part Number: 920-0143
S&S Cycle Piston, Kit, High Compression, Royal Enfield 650 Twin 920-0143
- Brand: S&S Cycle
- Product Code: 920-0143
- Availability: Special Order
$499.95