AIR SPRING KIT 20-26 GM HD (EXC CAB & CHASSIS & AT4X/ZR2) 2004-gmc-sierra-3500-esi4190931 while the aluminum honeycomb floor

while the aluminum honeycomb floor with insulation offers a comfortable and secure foundation

Air springs fully adjustable from 5-50 PSI

Patented INTGCool integrated heat sink makes plug & play installation as easy as replacing a stock bulb

AIR LIFT PROSERIES ULTIMATE HELPER SPRINGS

AIR SPRING KIT 20-26 GM HD (EXC CAB & CHASSIS & AT4X/ZR2) 2004-gmc-sierra-3500-esi4190931 while the aluminum honeycomb floorAIR LIFT AIR HELPER SPRINGS ; 20 26 SILVERADO SIERRA HD (EXCLUDING CAB AND CHASSIS AND AT4X ZR2) Underframe Kit Designed To Work With Most In Bed Hitches Up To 5,000 Lbs. Of Load Leveling Capacity (Note: Do Not Exceed Vehicle'S Gvwr) Easy To Install With Fully Illustrated Installation Manual Features Air Lift'S Lifetime Warranty, With A 60 Day Ride Satisfaction Guarantee Rugged Durable Components Including Air Springs And All Hardware Install