These 3-5/8" bore forged pistons are designed with a small recessed dome for 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. These are also used as a intermediate compression piston in 3-13/16", 4-5/16", and 5" stroke engines for Harley-Davidson® Sportster® models equipped with S&S Super Stock® cylinder heads. These pistons are clearanced for 5" stroke big twin engines with small (8-1/4") diameter flywheels, and are 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" |
| 103" |
11.8:1 |
92-1120 |
92-1121 |
92-1112 |
n/a
|
92-1124 |
n/a
|
*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"
