Passenger side loud banging all struts and shocks are brand new still happening checked all suspension bushings no noticable problems car runs smooth banging only when pass side hits short quick bumps its loud could it be an upper motor mount

Replace the missing bushing if it is available.

at the rear of vehicule look for place that are visuel that it is touching exhaust pipe near suspension
only a guest hope it helps

first of all, since you are using adjustable suspension you should make sure the spring is captive in the shock absorber. Lift the rear of the vehicle and support the car on the body, allowing the rear wheels to hang down. See if the spring can easily be moved. If it can. then likely the spring has sagged, or it is incorrect for the shock absorber. If not, while you are there check that the top hat of the strut is tight by lifting the wheel and strut assembly by hand. If you get any movement in the top of the strut, there will be a loud noise while going over bumps. Another area to check are the stabiliser arm/sway bar bushes. Mounted to the body you will see a bar that goes left to right, connecting to the struts with small link arms. Try to move this bar up and down against the body, paying attention to the rubber bushes where it meets the body. If there is movement in the bushes, there will be banging sounds when going over rough surfaces or bumps. Also check the small link arms for looseness or play.

You may have a bad strut mount, which mounts on top of the strut. Also check the stabilizer links and any rubber bushing.

THe 93 Mazda has both actually. The shock absorber in this car is just one component of the so called strut assembly. Read on if you want the details: Shock absorbers are simple suspension dampers that control the unwanted spring motion of the vehicle's frame caused by the suspension's springs. Struts, or strut assemblies, basically does the same thing, although they are used on a different type of suspension system and performs another function, which is to provide support for the suspension system.

A strut assembly is composed basically of a shock absorber unit, a coil spring, an upper pivot, and a lower control arm. A lot of vehicles today make use of strut assemblies instead of simple shock absorbers for the suspension system. The most popular of these strut assemblies is the MacPherson Strut for the front suspension and its rear suspension counterpart, the Chapman Strut.

Mazda vehicles are well known for their sporty looks and performance, amazing a lot of auto critics when they accelerate on paved streets and highways. Mazda vehicles, however, also has the capability of running on an off-road track without affecting the comfort that Mazda passengers feel; thanks a lot to the high quality Mazda struts they are equipped with. Original Mazda struts are guaranteed to provide every Mazda passenger a pleasurable ride, whatever kind of trail they may choose to traverse.

Check your exhaust and rear suspension for something loose or broken. Problem could be the exhaust, a hanger or cracked pipe. In the suspension it could be shocks, worn bushings, track arms etc. When a problem like this happens you have to get under the car and grab and try to move things checking for loosness. In general try to see what is loose enough that a bump causes it to rattle or bang. Other than inspecting the rear area there is no short cut that can be taken to solve the problem. You don't want to just start replacing parts hoping to fix the problem, that can be expxnsive and unnecessary. Good Luck!!!

Most likely you have worn out suspension parts. A front shock could cause the problem because the rubber bushing holding it in place may have dried up and fell out. Upper and lower A-arms have rubber bushings as well.
Best to have the front suspension checked out before it gets worse.

check to see if the struts mounts at the top are good and they are not leaking any oil and also check the wheel bearings

need an eyeball inspection when off the ground

broken exhaust mounts
shock /strut tower failure
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these not normally cause a metal to metal banging noise
lower swing arm arm bushes
hub bearing
rear brake pads worn to metal

you should have rear struts with a leveling system and also strut mounts most likey its your strut mounts