Increase the displacement of your X-Wedge engine with these bolt-on cylinder and piston kits. A 1/4" inch bore increase will take an X121 to X128 and an X117 to X132! No changes to the crankcases or flywheels are required. Bolt-on Proven Performance® from S&S!
FITMENT
FEATURES AND BENEFITS
- Bolt-on performance
- Increase displacement without crankcase modifications
- Fits all X-Wedge engines
OPTIONS
- Silver powdercoat, wrinkle black powdercoat or polished finish
This dyno chart shows the performance enhancements from increasing displacement. While peak horsepower is not greatly affected, overall torque drastically increases – 140 ft./lb. at 2500 rpm! Both engines are configured with S&S X569 cams, S&S 58mm throttle body, S&S tuned runner intake and custom made 2:1 header system with a performance muffler.
Replacement 4 3/8" Bore Cylinders & Pistons
for S&S® X-Wedge® Engines |
| |
X128 |
X132 |
| Displacement |
128" |
132" |
| Stroke |
4.25" |
4.375" |
| Bore |
4.375" |
4.375" |
| Cylinder Length |
4.645" |
4.645" |
| Compression Ratio |
10:1 |
10.3:1 |
| Cylinder Silver Powdercoat |
910-0002 |
| Cylinder Black Wrinkle Powdercoat |
910-0001 |
| Cylinder Full Polished |
910-0003 |
| Replacement Pistons |
Forged (for X128) |
Forged (for X132) |
| Standard Piston |
920-0003 |
920-0002 |
| +.010 |
920-0006 |
920-0004 |
| Cylinder includes one cylinder only. All piston part numbers are for one piston only and include rings, wristpin, and clips. |
| Replacement Parts for X128 & X132 Pistons |
| Standard Moly Faced Rings |
94-4285X |
| +.010 Moly Faced Rings |
94-4286X |
| Wristpin |
94-9277 |
| Keeper |
106-0004 |
