There is a long sequence where Dom, Brian, and others trie to rob a train of several cars on board. Several crashes occur, and Dom and Brian fight several men on board. The scene ends when a vehicles crashes into a bridge and Dom and Brian plummet off a cliff into water.
Lots of fighting, shooting, explosions, and destruction. Lots of big, powerful guns are pulled, and many minor characters are shot and killed. Not too much blood is seen, though a supporting character dies of a bloody gunshot wound. Some brutal fistfights. Mostly, the movie focuses on rampant destruction, smashing up cars, buses, trains, bridges, buildings, and just about anything else that gets in the way.
Characters are attacked when being transported. An RPG strikes a vehicle causing it to flip over and catch on fire. A character is seen crawling out, but is later killed when two grenades are dropped where was stuck. A lot of gunfire and and killing.
Hobbs and his people invade Brian and Dom's hideout. Lots of shooting and chasing, and Brian and a woman crash through the roof of a trailer. Hobbs beats up a group of attackers, and a female DEA agent shoots another.
The Unrated version has a bit more blood spurts, some of which are quite large, than the Theatrical version.