Piston BSA 350 cc 1924-31 OHV (Top valve )

This piston is 74,00 mm to be turned down to your measurements, piston bolt included, not piston rings Cyl.dia. STD 72,00 mm. comp. height 30,50 mm. Piston head Concave Piston length 76,20 mm Piston bolt Dia. 15.87 mm. Length 63,00 mm. Piston rings 2,38 x 2,38 x 2,38 mm. Made by Ateko, Sweden