These 3-5/8" bore forged pistons are designed as a high 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 3-5/8" bore, engines with Super Stock cylinder heads. These are also used as a high 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. The 92-1130 series pistons are clearanced for 5" stroke big twin engines with small (8-1/4") diameter flywheels.
| 3 5/8" BORE HIGH COMPRESSION PISTONS for S&S SUPER STOCK® HEADS |
| Displacement |
Compression Ratio |
Part Number |
| Standard |
+.010" |
+.020" |
+.030" |
+.040" |
+.060" |
103"
|
14.2:1 |
92-1130 |
92-1131 |
92-1132 |
92-1133 |
92-1134 |
n/a
|
Piston kits include set of pistons, rings, wristpins, and clips.
Recommended Piston Fit: Close: 0.0023"-0.0025" Loose: 0.0035"-0.0045"
