Bilstein 5100 Series 2012 GMC Sierra 1500 XFE Front 46mm Monotube Shock Absorber Air Intake Systems>Scoops & Snorkels The air springs are built

The air springs are built similar to a tire

High-efficiency custom-machined durable cast end tanks

this system adds a unique appearance while maximizing exhaust performance

They provide your engine with the largest amount of high-flowing air

torque and lowering EGTs

Bilstein 5100 Series 2012 GMC Sierra 1500 XFE Front 46mm Monotube Shock Absorber Air Intake Systems>Scoops & Snorkels The air springs are builtBilstein B8 5100 (Ride Height Adjustable) shock absorbers are designed for trucks and SUVs with a front OE coilover style suspension. Multiple snap ring grooves in the body allow for different spring seat positions, providing 0 2. 75 inches of front lift with OE springs (depending on application). The monotube shock absorbers feature a 46mm digressive piston a with self adjusting deflective disc valve setting. Bilstein B8 5100 (Ride Height Adjustable)