I have a 2012 Jeep Sahara Unlimted, 100% factory, no modifications, low mileage for the age of the car (60,000 in 8 years), mostly highway. About 3-4 years ago I started having the infamous Jeep Death Wobble and it gradually got worse. Would avoid roads I wouldn't normally ride on to avoid a pothole or bump that sent the jeep into a wobble where the front end seems to drop until you slow to 20mph. It's fine as long as you're not driving on the freeway and aren't afraid someone will hit you from behind at 60km/h if you slow down to stop the rigid axle vibration. Complained to NHTSA and Fiat Chrysler, they pretend it's not a problem, just google it. "Delayed Death" No. 1 in the search results. Bought this part, incredibly easy to install, took about 45 minutes, took 15mm and 18mm wrenches and a white marker to mark the maximum steering stops so I wouldn't go over them. No elevator required. Easy to fix. Best $40 I've spent in years. For two months I had no problems, even intentionally drove over potholes to see if the resonance started, but it didn't. All I can say is that the FCA is ashamed for not fixing this or reminding them of this apparent safety issue. But for $40 and 45 minutes, you can do it yourself.