A tailed beast uses its massive chakra reserve to turn anything from a roar or a wave into a powerful force of pressure and destruction. When Naruto was in control while using Kurama's power, he demonstrated powerful shockwaves by roaring or movement of his arms. When enraged or when Kurama took control of his body, he has been shown to use explosions with powerful wave of his arms. The raw force behind Naruto once he enters Version 2 was powerful enough to force Pain's Shinra Tensei back at him.