Available in limited edition for Porsche 991 GT2 RS and GT3 RS Ultimate Magnesio is the forged magnesium hyper street wheel engineered to be the lightest wheel ever.Optimization during the design phase, combined with the use of magnesium, the lightest of structural metals (density of 1.78 kg/dm3, while the specific weight of aluminum is 2.74 kg/dm3), has allowed OZ to achieve feather weight without jeopardizing wheel rigidity and strength.Aggressive side cuts and surfaces produced entirely using 5-axis mills make the wheel lightweight and rigid, able to improve driving performance on turbocharged vehicles like the Porsche 991 GT2 RS and GT3 RS. Ultimate Magnesio is a unique, unbelievably light forged street wheel: only 7.23 kg on the front (9.5 x 20” ET 50) and 9.74 kg on the back (12.5 x 21” ET 48), for central lock applications exclusively for Porsche 991 GT2 RS and GT3 RS.Surface treatments make the wheel extremely corrosion resistant ‒ a street wheel fit for all conditions.OZ Ultimate Magnesio is available in limited edition for Porsche 991 GT2 RS and GT3 RS, with different sized wheels front to back - 20” front and 21” back, in the shimmering Grigio Corsa Bright color.