I have a 2012 Mustang GT and recently had the H&R Race Springs installed... we forgot to transfer the rubber coil insulators off the factory springs. Whenever I hit any kind of bump, there is this horrible chunking metal on metal noise!!! will taking it apart and adding the insulators on the new springs solve the problem or do I need to buy something else??? Upper spring mounts??? THANK YOU ALL IN ADVANCE FOR YOUR HELP!

 

No you need to put the isolators on from the stock springs!!

 

thanks! do you think that is what is causing that noise?

 

Well it doesn't have to be the ones from your stock springs but as long as you have isolators on your new springs you shouldn't here any noises.

 

Could also be the stock strut/spring mount.

 

I ran these on my 2005, unless you added shocks, adj. panhard, axle bump stops, possibly a bumpsteer kit as well I would imagine, because these springs sat soooo low, you would have some issues. You are changing alot of geometry here, and check your pinion angle. And yeah, add some isolators..