Set of spherical top pistons (group A, normal size = 78.00mm) for high-octane gasoline (92 octane rating) for URAL motorcycle. Comes with a set of piston rings (78.00mm, 2.5mm 2.5mm 5mm 5mm, 4 compression rings and 4 oil scraper rings), 2x piston pins, 4x cir-clips, 2x connecting rod small end bushings for URAL 650cc motorcycle. Pistons are made of heat-resistant aluminum alloy and thermally processed. NEW!