Exclusive internal jounce bumper inside springs absorbs shock; Up to 5,000 of load leveling capacity; Maintenance free! Run safely with zero air pressure.; Eliminates harsh jarring on rough roads; Air adjustable from 5 to 100 PSI; Easy to install in less than 2 hours; 60 Day Industry-Exclusive No Questions Asked Money Back Guarantee; Best Lifetime Warranty in industry! Covers all kit contents PartNumber : alf88344 Description : LOADLIFTER 5000 ULTIMATE AIR SPRING KIT; REAR; ADJUSTABLE; WITH INTERNAL JOUNCE Title : LOADLIFTER 5000 ULTIMATE AIR SPRING KIT W/INTERNAL JOUNCE BUMPER Features : Best Lifetime Warranty in industry! Covers all kit contents Features : Up to 5,000 lbs. of load-leveling capacity (Note: Do not exceed vehicle's GVWR) Title : Air Lift Susp Air Spring Kit WARNING CA Proposition 65 : Yes WARNING CA Proposition 65 Message : California Warning: Cancer and Reproductive Harm û www.P65Warnings.ca.gov 2009-2016 Ford F53 Base V10.-cc Suspension::Air Suspension Kits