Improved Stance, Balance, and Handling. If you want to improve your vehicle's on-road performance and off-road capabilities, Rough Country's M1 Strut Leveling Kits are the way to go. Our M1 Leveling Struts help stabilize your vehicle's movements, enhancing control when you turn, brake, accelerate or ride over uneven road surfaces. As an adjustable ride height strut, these M1's keep your suspension from overextending, providing a more consistent ride. Made for rugged off-road performance, our M1 struts have a 46mm digressive piston for a more stable ride, preserving the smooth ride quality you need.