Piston Monark 500 cc OHV ( Overhead Valve ) Army mod. Albino. NOS Unground, turned down to your measurements, 82,00

Piston bolt included, not rings, the piston must be ground down to your measurement. Cyl.dia STD 79.00 mm. Comp. height 34.00 mm. Flat piston top. Piston length 78.00 mm. Piston Bolt Dia. 20.00 mm. Length 70.00 mm Piston rings 79.00 x 2.38 x 2.38 x 4.50 mm.