4-3/8" Bore Cylinder Only Sets for X-Wedge® Engines - Polished

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Increase the displacement of your X-Wedge engine with these bolt-on cylinder and piston kits. Increase the displacement of your X-Wedge engine with these bolt-on cylinder and piston kits. A 1/8" bore increase will take an X121 to X128, and a 1/4" bore increase will take an X117 to X132! No changes to the crankcases or flywheels are required. No changes to the crankcases or flywheels are required. Bolt-on Proven Performance® from S&S!

FITMENT

  • S&S X-Wedge® engines

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
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

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