VT#: 11-2200
Keith Black 390 hypereutectic piston set is standard size and is for a 3.438" bore. Pistons have a compression of 9.0:1.
**NOTE: Run engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears, in order to properly break-in new pistons and rings.
FL Electra Glide® 1941-1977
FX Super Glide® 1971-1977