Piston BSA 350 cc 1928-31 OHV (Top valve )

This piston is 74,50 mm, must be turned down to your measurements, piston bolt included, not rings Cyl.dia. STD 72,00 mm. comp. height 33,00 mm, flat piston top with 2 valve ports. piston length 78,00 mm. piston pin Dia. 15,87 mm, length 63,00 mm. piston rings 2,38 x 2,38 x 2,38 mm Make Ateko, Sweden