Hard pack clay high bite 1/8 track the track is very smooth with very large jumps. It also has a washboard section ( very rough section ) and I can go through at full speed and stay perfectly in control. I'm running stock pistons with 45frt and 40rr and 5-5-3 in the diffs. Very dialed. Just started using the jc high flow body but will be going back to the tundra for durability because my brand new jc is already starting so crack in the corners. My tundra bodies have lasted me a good while with no issue