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acdelco specialty 504-511: top-performing rear air lift shock absorber for unmatched suspension performance logo

ACDelco Specialty 504-511: Top-performing Rear Air Lift Shock Absorber for Unmatched Suspension Performance Review

4

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Very good

Revainrating 4 out of 5  
Rating 
4.0
💪 Performance Parts: Shocks, Struts & Suspension, 🏎️ Performance Car Parts & Accessories

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Description of ACDelco Specialty 504-511: Top-performing Rear Air Lift Shock Absorber for Unmatched Suspension Performance

can maintain ride height with up to 1,100 lbs (per pair) of additional temporary leveling capacity to help improve vehicle handling and reduce the risk of undercarriage damage. adjustable air pressure to custom tune each individual load weight. the super finished chromed piston rod provides anti-corrosion support, a more consistent wear surface, proper seal lubrication, and longer product life. real-world tested to ensure that the shocks will fit intended vehicles and applications. not to exceed vehicle gvwr (gross vehicle weight rating). product does not increase payload. Fit type: Vehicle Specific.

Reviews

Global ratings 4
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Type of review

Revainrating 5 out of 5

There are no leaks and the

Started with a set of monro' Air came out because of the seals in the air duct and I sent it back then I will install these. No leaks and they worked better on a lift. They have two seals instead of an O-ring. On the other hand, I've even tried silicone sealant, but to no avail. Here are the ones you need to buy.

Pros
  • elevator worked better. Everything is OK!
Cons
  • Not happy with everything

Revainrating 5 out of 5

Perfect fit best for shocks, struts and suspension

I ordered these for my '67 Impala that needed a little help raising the rear of the car. I only have to keep about 50 pounds of air in them to get the job done. The car has new springs all round and while I was waiting for the front springs to seat, the rear ones were still a bit low. For the money, a name you can trust, an easy setup you can't go wrong with.

Pros
  • best
Cons
  • fold package

Revainrating 2 out of 5

that the shock absorbers are too short

when I fitted these shock absorbers they just didn't look right and I drove El Cmino for about a week and also had to find a spare wheel as I was going to this car to my grandson and I still want to do it so I lifted the right rear wheel to check the clearance and after removing the nuts I couldn't get the tire and wheel out from under the pickup. There wasn't enough room to get out, I had to place another jack under the axle, remove the shock from the bracket and lower the axle to remove the…

Pros
  • Excellent design
Cons
  • There are nuances

Revainrating 4 out of 5

It works, but plan ahead.

Purchased to replace non-standard GM air shocks. They are acceptable replacements for the originals, but differ slightly (e.g. the air connection is in a different location; the mounting studs have been replaced with the special mounting screws provided). Just because they say they will fit your vehicle doesn't mean they are the best choice for you and you may need to purchase an accessory kit for your application or purchase a different brand. If you're using these as a replacement for a…

Pros
  • Hard Finish
Cons
  • Damaged