recently removed from a 1977 4-1/2" stroked shovelhead
pistons are S&S cast by TRW.
not sure of the cylinder brand. oil drains have been relocated to a lower position.
GME0466-74BF and 16587-66 on cyl. base.
bike ran great, is being parted out.
pistons measure 3.474 and fit the bore great.
just lightly hone, re-ring and done. these are truly nice parts. no disappointments.
located in southern sheboygan county, just off of hwy 57.
no phone calls please.