Air Lift LoadLifter 5000 Air Spring Kit 2012-bmw-550i-gt-xdrive-base-esi3879952 Dyno tested and produced power

Dyno tested and produced power increases of +15Hp and +27 lbs

Optimize your 01-04 LB7 GM diesel's airflow to improve throttle response with aFe's ATLAS 3" turbo down-pipe

HC4-SPR6 kit features a Sport pressure plate for a nice upgrade

meaning that both air springs will be adjusted at the same time

Air Lift LoadLifter 5000 Air Spring Kit 2012-bmw-550i-gt-xdrive-base-esi3879952 Dyno tested and produced powerOffering up to 5,000 pounds of load leveling capacity, the LoadLifter 5000 kit from Air Lift will make towing and hauling a breeze Fully adjustable air springs level your vehicle when towing or hauling a heavy load for a safe comfortable ride Fully Adjustable Air Springs Level Your Vehicle When Towing Or Hauling Heavy Loads For A Safe Comfortable Ride Up to 5,000 lbs. of load leveling capacity (Note: Do not exceed vehicle's GVWR) Rugged Durable