Red Bull Racing 's RB9 car will be heavier than the RB8 .
Red Bull Racing 's RB9 car sport more rigid front wings compared to last year 's car in accordance with 2013 Formula 1 rules .
Red Bull Racing 's RB9 car will be heavier than the RB8 and sport more rigid front wings compared to last year 's car in accordance with 2013 Formula 1 rules .