The 911 GT1 EVO 98 was the car created by Porsche to compete in the GT1 category in 1998, at the Le Mans 24 Hours and in the FIA GT international championship. At the beginning, the GT1 were Grand Touring cars modified for the competitions, but in the last years they got more and more similar to racing prototypes. Porsche had already run in GT1 the years before, but the ‘98 car was a brand new model. This was the first car built by Porsche with a carbon composite monocoque chassis. Front and rear suspensions double wishbones with pushrod. Wheels diameter 18 inches; carbon brake discs, calipers wi th 8 pistons at front and with 6 pistons at rear axle. Six-cylinder flat engine, 3.2 litres twin turbo, 4 valves per cylinder, water-cooled, maximum torque 630 Nm at 5000 rpm, maximum power 550 hp at 7200 rpm. Six-speed gearbox with sequential change, trip le disc carbon fibre clutch. Fuel tank capacity 100 litres.
In 1998, the FIA GT championship was dominated by Mercedes, but Porsche was able to win the Le Mans 24 Hours. In the race at Silverstone, Alexander Grau and Andreas Scheld ran the car number 5 o f the German team Zakspeed Racing.