These forged pistons are designed for use in S&S big bore Hot Set Up Kits® for Harley-Davidson® Evolution® big twin engines, and S&S 3-5/8" bore engines with S&S Super Stock® cylinder heads and 4-1/4", 4-1/2" and 4-5/8" stroke engines with stock diameter (8-1/2") flywheels. The low silicon forged piston allow closer fit, quiet operation, and long engine life.
3 5/8" BORE STANDARD COMPRESSION PISTONS for S&S SUPER STOCK ® HEADS
|
| Displacement |
Compression Ratio
|
Part Number |
| Standard |
+.010" |
+.020" |
+.030" |
+.040" |
+.060" |
| 88" |
9.4:1 |
92-1060 |
92-1061 |
92-1062 |
92-1063 |
92-1064 |
92-1066 |
| 93" |
9.9:1 |
92-1060 |
92-1061 |
92-1062 |
92-1063 |
92-1064 |
92-1066 |
| 96" |
10.2:1 |
92-1060 |
92-1061 |
92-1062 |
92-1063 |
92-1064 |
92-1066 |
