These forged pistons are designed as an intermediate compression piston for engines with S&S Super Stock® cylinder heads. These pistons can be used to increase the compression of S&S Sidewinder® kits for Harley-Davidson® Evolution® engines and in S&S engines with Super Stock cylinder heads. They are designed to be used in 4-1/4", 4-1/2", and 4-5/8" stroke engines with stock (8-1/2") diameter flywheels, and in 3-13/16" and 4-3/4" stroke engines with small (8-1/4") diameter flywheels. 3-5/8" bore. Made from high strength low silicon forging for racing applications.
| 3 5/8" BORE INTERMEDIATE COMPRESSION PISTONS for S&S SUPER STOCK® HEADS |
| Displacement |
Compression Ratio |
Part Number |
| Standard |
+.010" |
+.020" |
+.030" |
+.040" |
+.060" |
| 79"* |
9.2:1 |
92-1110 |
92-1111 |
92-1112 |
n/a |
92-1114 |
n/a |
| 88" |
10.2:1 |
| 93" |
10.7:1 |
| 96" |
11:1 |
| 98"* |
11.3:1 |
*Small Diameter Flywheels
Piston kits include set of pistons, rings, wristpins, and clips.
Recommended Piston Fit: Close: 0.0023"-0.0025" Loose: 0.0035"-0.0045"
