This is an "ABC" cylinder & piston set."A"luminum piston,"B"rass
cylinder liner, with a "C"hrome plating on the cylinder.
The plating is actually Nickel but is still being labled ABC not ABN.
The inside of the liner is tapered so when the piston goes up it gets
tighter. .
This has 4-ports and an alignment notch for proper installation. .
Includes: 1 matched cylinder and piston only, piston pin is NOT is included.
Specifications: Bore: .8346" (21.2mm) Stroke .734"