HYPER 12 REAR EXHAUST PULL START ENGINEThe Hyper 12 rear exhaust provides entry level enthusiasts and club racers with an engine that can perform at a very high level without costing the earth. The non pull start version is taylor made for most of the current crop of racing nitro touring cars, while the pull start version allows you to experience the added power of a rear exhaust engine with the convenience of a pull start.