Bilstein 5100 Ride Height Adjustable Shock Absorbers are designed for trucks and SUV's with a front OE coilover style suspension. Multiple snap-ring grooves in the body allow for different spring seat positions, providing your Tundra front lift (depending on application). The monotube shock absorbers feature a 46mm digressive piston a with self-adjusting deflective disc valve setting. The Bilstein B8 5100 Ride Height Adjustable shock absorbers also provide increased wheel travel and improved handling.