S&S Cycle 920-0143 S&S Cycle Royal Enfield 650 Twin High-Compression 11 To 1 Piston Kit

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