Large 60mm body for increased oil capacity, cooling, and long-term durability 60mm digressive piston improves ride comfort and control over rough terrain Vehicle specific tuning Monotube design ensures consistent, fade-free performance in all conditions Adjustable spring seat offers 0-2.75in of lift, depending on the application; Custom engineered cold wound linear springs for enhanced vehicle control and ride comfort; Kit includes (2) 60mm shock absorbers, (2) billet hard anodized spring seats, and (2) springs; Available for late model trucks and SUVs which utilize a front coilover suspension; BILSTEIN B8 5160 recommended for rear applications; Made in the USA