73.5mm Omega offset dish
Swiftune always specificies high performance Omega pistons in its race engines. The high quality pistons are forged from 2618A aerospace specification aluminium alloy and then machined to exacting standards - simply the best you can buy for an A series competition engine. 73.5mm bore size, dish 5.8cc capacity. 1.470" compression height, short gudgeon pins and circlips for floating con-rods.