This is by far the best upgrade I've made to our 2017 Class C E-450 chassis! No more white-knuckle steering when a passing trailer or a crosswind gust throws it. No more wandering on the road and no more oversteering. No more wrestling with ruts or uneven road surfaces. Driving fatigue is drastically reduced, making it easy to drive even with one hand. Now it's like driving a really big SUV. They should be part of the standard equipment in every motorhome. First, the alignment of our new device was performed, which revealed very minor improvements. Replacing the stock anti-roll bar (designed for a van, not the weight of an RV) changes the world. The OEM stabilizer is so thin that you can drive it with your bare hands without much effort. See image for comparison with OEM unit removed.