Porsche tuners Gemballa and RUF reveal off-road 911 concepts

German tuning houses and Porsche specialists, Gemballa and RUF, have revealed off-road versions of the iconic 911. Gemballa’s Avalanche 4x4 has only been teased with renders, however what’s even more ambitious than the concept is that the model is slated for release within the next two years. Built on the underpinnings of a current-generation Porsche 911, the Avalanche 4x4 receives major modifications to suit an off-road environment.