S&S Cycle 3-1/2" Bore Cylinder & Piston Kit - 1984-1999 Evo Big Twin - Natural Finish
Cylinder and piston kits contain S&S 3-1/2" bore (80") cylinders and forged pistons, rings, wrist pins, and head and base gaskets
The pistons included in kits are flat-topped cast pistons designed to be used with either stock cylinder heads or with S&S Performance Replacement heads (8.8:1 compression ratio)
Cylinders have a natural silver finish
Bore Size: 89.00 mm
Stroke Length: 4-1/4"
Compression Ratio: 8.8:1