Fabtech Dirt Logic 4.0 Coil Over Shock Absorbers are the best shocks you can get if you look for shock that practically eclipse all other competitors on the market! Dirt Logic 4.0" Coil Over shocks use coil springs made to the highest quality standards this industry has ever known. They are developed from all new Stainless Steel and Aluminum ? with highest grade 304 Stainless Steel shock bodies for superior corrosion resistance. Each shock body comes with a carefully detailed machine finish for a stunning appearance. The special Aluminum resi construction allows for greater heat dissipation ? keeping the shock cooler to reduce fade during aggressive off-road use! Dirt Logic coils deliver massive performance without breaking, settling or bowing!