Get a kit that comes with new upper control arms (Upper ball joints are pressed in them from factory, but you can replace them on the aftermarket ones) check out ready lift. They have the proper kits
The rough country system is just a knock off flowmaster American thunder series cat-back. They both use the super 40 muffler, I ran mine for a week before I removed the muffler. It didn't sound bad by any means but it was too quiet for me. The drone was minimal.
They also make a kit that's strictly for the AT4 models (#1318). I see that ready lift doesn't sell the spacers anymore without the upgraded control arms, probably because of all the failures. You'd think a 1" would be safe but it's hard to say. I even jacked my truck up a month ago to check the ball joints and I couldn't find any play.
The 2” rough country, the dealer wanted to install a different level that goes under the strut but they wouldn’t warranty it either. I called rough country and they weren’t any help, I even contacted them before I bought the kit asking if it would hurt the geometry and they said no. All the levels are the same, they just go in different spots. Unless you fix it with the new UCA’s that correct the binding.
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For all you guys in here with levels without new UCA’s. I’d be careful, 10,000km later (6000miles) the front end took a beating. The ball joint completely separated, dropped the UCA on my tire and wrecked the CV axle. The left side needed a ball joint replacement as well. $2500 later it’s fixed and back at factory height. Looks like a car again (Use to have 34” Toyo MT’s with the level). Time for some 275 or 285/65 Ridge grapplers and I’m calling it a day unfortunately.
I'm looking at the Ready lift 1.75" level with the new UCA's along with the SST level with the 3" blocks. I should have done this at the start vs my 2" RC level costing me $2500 in repairs... Anyways I heard you can just clear the new UCA's if you keep the factory wheels and tires but you can't go any wider without spacers. I love the factory 20's so I want to keep them, if I get the level again I'd run 285/65R20's. Would a 0.5" spacer clear the new UCA's? I know they stick out a bit more than the factory UCA's but I haven't been able to find any pics, thanks for the help!
I don’t think they torqued the bolts properly when they had it all apart. I called rough country about it and they said there’s no way it should have came apart like it did. Especially considering all of the trucks miles are highway. I’m not sure what all’s different between the AT4 and non AT4 models but I know they got the extra 2” from longer struts. The angles all looked fine with the 2” level.
2” rough county, I called them about the failure. They said there’s no way their kit could have caused that, especially because my truck only sees highway driving. They blamed the shop that installed it. GM got back to me this morning with a bill of $1800 to get it all fixed. They said it was caused from the added stress but the mechanic said to use leveling kits that put spacers below the struts. He said you’ll be perfectly fine with that.
It’s at the dealer, waiting to see what all needs to be replaced. I see that motofab offers a 1” level that doesn’t require the strut to be pulled apart for the spacer. I hate the factory rake. Plus I had 35x11.5’s on order which I had to cancel.
Well I thought it wouldn’t happen to me, but my ball joint failed, collapsed the UCA and pulled my CV shaft out while on the highway. I highly recommend upgrading to new UCA’s with any levelling kit. I only had 12,000km’s with it installed. I would have bought them but the new UCA’s stick out further in which you can’t run the stock wheels without spacers if you get bigger tires. I have no interest in running spacers. Some food for thought...
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