These pistons are 66mm, machined down to your measurements, pistons and piston bolts included
Cyl.Dia STD 63.50 mm.
Comp. height 42.06 mm. Flat Piston top
Piston length 74.61 mm.
Piston Bolt Dia. 19.05 mm. Length 53 mm.
Piston rings 1.59 x 1.59 x 1.59 x 3.17 mm
Made by Ateko Sweden