 The first chassis used by the GP3 Series was the GP3/10 built by Dallara, who also produces cars in the championship's sister series GP2.It is equipped with a 6-speed paddle shift gearbox and a four-cylinder 2.0 litre (122 cu in) turbocharged engine with 280 bhp developed by Renault Sport.The chassis used tyres supplied by Pirelli, who would then go on to be the tyre supplier for Formula One and GP2 from 2011.