3-1/2" Bore Cylinder & Piston Kit For 1984-'99 Big Twins With Stock Or S&S Performance Replacment Cylinder Heads - Natural Aluminum Finish CHIN SPOILERS - BAD DAD TOURING May not be compatible with

May not be compatible with some aftermarket dual headers

Stock style breathing system – stock breather spacing and function is compatible withstock and most performance air cleaners

Black finish

Cylinder head modification is also not needed

3-1/2" Bore Cylinder & Piston Kit For 1984-'99 Big Twins With Stock Or S&S Performance Replacment Cylinder Heads - Natural Aluminum Finish CHIN SPOILERS - BAD DAD TOURING May not be compatible withThis replacement cylinder and piston kit contains S&S 3 1 2" bore cylinders and forged pistons, rings, wrist pins, and head and base gaskets. The pistons included in this kit are flat topped forged pistons designed to be used with either stock cylinder heads or with S&S Performance Replacement heads. Cylinders have a natural aluminum finish.