Originally Posted by stunt

The lift is rated for 9000 lbs. There's a support brace along the top between the 2 posts and also carries the hydraulic hose to the cylinder ram on the post opposite the one with the motor on it. The steel cables to sync the 2 rams also go through it.

As for slap thickness, it is around 10", so way more than the normal 6". This was not really by choice just because the guys the poured the slap were too lazy to put down enough #57 rock to bring the bottom to within 6" of finished grade.

I have had my Chevy dually on the lift many times. It weigh about 8,200 lbs empty, being crew cab long bed. So the X5 is nothing.