For an aggressive stance, the ProRyde torsion key lift provides up to 3" of front lift on most model Ford F150, Expedition or Navigator. Installation does not require removal or recalibration and will not over-stress the factory torsion bars when using the 2" adjuster bolts provided. The keys are forged and surpass OEM strength tests. Included is a forged threaded adjuster and oversized forged 12.9 adjuster bolts. Factory OE ride quality is not affected. If you plan to install the lift yourself, consider the ProRyde torsion bar tool PRD88-8000A.