Superlift 99-10 GM 1500/2500 LD / 3500 HD 4WD 6in Lift Kit Shock Box

Established in 1975, Superlift remains a pioneer in the industry, and is one of the few suspension companies operated by true truck and off-road enthusiasts. We are passionate about trucks, wheeling and an outdoor lifestyle that go hand-in-hand. We can talk the talk because we walk the walk.This question.... ''What's best for the customer?''... is always at the top of our list in everything we do, from product planning and design to customer service. This simple guiding principal has served us well for decades, and will continue to guide us into the future.We are proud to provide the truck, Jeep and SUV owner products that perform better than advertised. We understand that most people spend the majority of their windshield time on-road, and our designs reflect this. You will be 100% satisfied with our products on-road or off - we guarantee it! Determining what product is right for your vehicle and lifestyle can be a complicated task, especially with so many companies and options to choose from. We urge you to carefully research your purchase. Most lift kits represent a considerable investment, and you will literally live with your choice for years. Talk to fellow off-roaders, and your local automotive specialty shop before making a purchase. We love to talk shop, and we encourage you to give our tech staff a call. Bottom line... if you do your homework, you'll discover that we've done ours. SUPERLIFT SHOCK PACK-6 Lift 01-10 GM 2500/3500HD 4WD/99-10 GM 1500HD/2500 Light-Duty 4WD 2002-2006 Chevrolet Avalanche 2500, 2001-2003 Chevrolet Silverado 1500 HD, 2005-2006 Chevrolet Silverado 1500 HD, 2007 Chevrolet Silverado 1500 HD Classic, 2001-2010 Chevrolet Silverado 2500 HD, 2007 Chevrolet Silverado 2500 HD Classic, 2001-2006 Chevrolet Silverado 3500, 2007 Chevrolet Silverado 3500 Classic, 2007-2010 Chevrolet Silverado 3500 HD, 2000-2010 Chevrolet Suburban 2500, 1999-2000 GMC K2500, 2001-2003 GMC Sierra 1500 HD, 2005-2006 GMC Sierra 1500 HD, 2007 GMC Sierra 1500 HD Classic, 2001-2010 GMC Sierra 2500 HD, 2007 GMC Sierra 2500 HD Classic, 2007 GMC Sierra 3500 Classic, 2007-2010 GMC Sierra 3500 HD, 2000-2010 GMC Yukon XL 2500 Fits, Fitments 1999 GMC K2500 Sierra SL 1999 GMC K2500 Sierra SLE 1999 GMC K2500 Sierra SLT 2000 Chevrolet Suburban 2500 Base 2000 Chevrolet Suburban 2500 LS 2000 Chevrolet Suburban 2500 LT 2000 GMC K2500 Sierra SL 2000 GMC K2500 Sierra SLE 2000 GMC K2500 Sierra SLT 2000 GMC Yukon XL 2500 SLE 2000 GMC Yukon XL 2500 SLT 2001 Chevrolet Silverado 1500 HD LS 2001 Chevrolet Silverado 1500 HD LT 2001 Chevrolet Silverado 2500 HD Base 2001 Chevrolet Silverado 2500 HD LS 2001 Chevrolet Silverado 2500 HD LT 2001 Chevrolet Silverado 3500 Base 2001 Chevrolet Silverado 3500 LS 2001 Chevrolet Silverado 3500 LT 2001 Chevrolet Suburban 2500 Base 2001 Chevrolet Suburban 2500 LS 2001 Chevrolet Suburban 2500 LT 2001 GMC Sierra 1500 HD SLE 2001 GMC Sierra 1500 HD SLT 2001 GMC Sierra 2500 HD SL 2001 GMC Sierra 2500 HD SLE 2001 GMC Sierra 2500 HD SLT 2001 GMC Yukon XL 2500 SLE 2001 GMC Yukon XL 2500 SLT 2002 Chevrolet Avalanche 2500 Base 2002 Chevrolet Silverado 1500 HD LS 2002 Chevrolet Silverado 1500 HD LT 2002 Chevrolet Silverado 2500 HD Base 2002 Chevrolet Silverado 2500 HD LS 2002 Chevrolet Silverado 2500 HD LT 2002 Chevrolet Silverado 3500 Base 2002 Chevrolet Silverado 3500 LS 2002 Chevrolet Silverado 3500 LT 2002 Chevrolet Suburban 2500 LS 2002 Chevrolet Suburban 2500 LT 2002 GMC Sierra 1500 HD SLE 2002 GMC Sierra 1500 HD SLT 2002 GMC Sierra 2500 HD Base 2002 GMC Sierra 2500 HD SL 2002 GMC Sierra 2500 HD SLE 2002 GMC Sierra 2500 HD SLT 2002 GMC Yukon XL 2500 SLE 2002 GMC Yukon XL 2500 SLT 2003 Chevrolet Avalanche 2500 Base 2003 Chevrolet Silverado 1500 HD LS 2003 Chevrolet Silverado 1500 HD LT 2003 Chevrolet Silverado 2500 HD Base 2003 Chevrolet Silverado 2500 HD LS 2003 Chevrolet Silverado 2500 HD LT 2003 Chevrolet Silverado 2500 HD WT 2003 Chevrolet Silverado 3500 Base 2003 Chevrolet Silverado 3500 LS 2003 Chevrolet Silverado 3500 LT 2003 Chevrolet Suburban 2500 LS 2003 Chevrolet Suburban 2500 LT 2003 GMC Sierra 1500 HD SLE 2003 GMC Sierra 1500 HD SLT 2003 GMC Sierra 2500 HD Base 2003 GMC Sierra 2500 HD SLE 2003 GMC Sierra 2500 HD SLT 2003 GMC Sierra 2500 HD WT 2003 GMC Yukon XL 2500 SLE 2003 GMC Yukon XL 2500 SLT 2004 Chevrolet Avalanche 2500 Base 2004 Chevrolet Silverado 2500 HD Base 2004 Chevrolet Silverado 2500 HD LS 2004 Chevrolet Silverado 2500 HD LT 2004 Chevrolet Silverado 2500 HD WT 2004 Chevrolet Silverado 3500 Base 2004 Chevrolet Silverado 3500 LS 2004 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 WT 2004 Chevrolet Suburban 2500 LS 2004 Chevrolet Suburban 2500 LT 2004 GMC Sierra 2500 HD Base 2004 GMC Sierra 2500 HD SLE 2004 GMC Sierra 2500 HD SLT 2004 GMC Sierra 2500 HD WT 2004 GMC Yukon XL 2500 SLE 2004 GMC Yukon XL 2500 SLT 2005 Chevrolet Avalanche 2500 LS 2005 Chevrolet Avalanche 2500 LT 2005 Chevrolet Silverado 1500 HD Base 2005 Chevrolet Silverado 1500 HD LS 2005 Chevrolet Silverado 1500 HD LT 2005 Chevrolet Silverado 2500 HD Base 2005 Chevrolet Silverado 2500 HD LS 2005 Chevrolet Silverado 2500 HD LT 2005 Chevrolet Silverado 2500 HD WT 2005 Chevrolet Silverado 3500 Base 2005 Chevrolet Silverado 3500 LS 2005 Chevrolet Silverado 3500 LT 2005 Chevrolet Suburban 2500 LS 2005 Chevrolet Suburban 2500 LT 2005 GMC Sierra 1500 HD SLE 2005 GMC Sierra 1500 HD SLT 2005 GMC Sierra 2500 HD Base 2005 GMC Sierra 2500 HD SLE 2005 GMC Sierra 2500 HD SLT 2005 GMC Sierra 2500 HD WT 2005 GMC Yukon XL 2500 SLE 2005 GMC Yukon XL 2500 SLT 2006 Chevrolet Avalanche 2500 LS 2006 Chevrolet Avalanche 2500 LT 2006 Chevrolet Silverado 1500 HD LT 2006 Chevrolet Silverado 2500 HD LS 2006 Chevrolet Silverado 2500 HD LT 2006 Chevrolet Silverado 2500 HD WT 2006 Chevrolet Silverado 3500 LS 2006 Chevrolet Silverado 3500 LT 2006 Chevrolet Silverado 3500 WT 2006 Chevrolet Suburban 2500 LS 2006 Chevrolet Suburban 2500 LT 2006 GMC Sierra 1500 HD SLE 2006 GMC Sierra 1500 HD SLT 2006 GMC Sierra 2500 HD SL 2006 GMC Sierra 2500 HD SLE 2006 GMC Sierra 2500 HD SLT 2006 GMC Sierra 2500 HD WT 2006 GMC Yukon XL 2500 SLE 2006 GMC Yukon XL 2500 SLT 2007 Chevrolet Silverado 1500 HD Classic LT 2007 Chevrolet Silverado 2500 HD LT 2007 Chevrolet Silverado 2500 HD LTZ 2007 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2007 Chevrolet Silverado 3500 HD LT 2007 Chevrolet Silverado 3500 HD LTZ 2007 Chevrolet Silverado 3500 HD WT 2007 Chevrolet Suburban 2500 LS 2007 Chevrolet Suburban 2500 LT 2007 Chevrolet Suburban 2500 LTZ 2007 GMC Sierra 1500 HD Classic SLE 2007 GMC Sierra 1500 HD Classic SLT 2007 GMC Sierra 2500 HD SLE 2007 GMC Sierra 2500 HD SLT 2007 GMC Sierra 2500 HD WT 2007 GMC Sierra 2500 HD Classic SL 2007 GMC Sierra 2500 HD Classic SLE 2007 GMC Sierra 2500 HD Classic SLT 2007 GMC Sierra 2500 HD Classic WT 2007 GMC Sierra 3500 Classic SL 2007 GMC Sierra 3500 Classic SLE 2007 GMC Sierra 3500 Classic SLT 2007 GMC Sierra 3500 Classic WT 2007 GMC Sierra 3500 HD SLE 2007 GMC Sierra 3500 HD SLT 2007 GMC Sierra 3500 HD WT 2007 GMC Yukon XL 2500 SLE 2007 GMC Yukon XL 2500 SLT 2008 Chevrolet Silverado 2500 HD LT 2008 Chevrolet Silverado 2500 HD LTZ 2008 Chevrolet Silverado 2500 HD WT 2008 Chevrolet Silverado 3500 HD LT 2008 Chevrolet Silverado 3500 HD LTZ 2008 Chevrolet Silverado 3500 HD WT 2008 Chevrolet Suburban 2500 LS 2008 Chevrolet Suburban 2500 LT 2008 GMC Sierra 2500 HD SLE 2008 GMC Sierra 2500 HD SLT 2008 GMC Sierra 2500 HD WT 2008 GMC Sierra 3500 HD SLE 2008 GMC Sierra 3500 HD SLT 2008 GMC Sierra 3500 HD WT 2008 GMC Yukon XL 2500 SLE 2008 GMC Yukon XL 2500 SLT 2009 Chevrolet Silverado 2500 HD LT 2009 Chevrolet Silverado 2500 HD LTZ 2009 Chevrolet Silverado 2500 HD WT 2009 Chevrolet Silverado 3500 HD LT 2009 Chevrolet Silverado 3500 HD LTZ 2009 Chevrolet Silverado 3500 HD WT 2009 Chevrolet Suburban 2500 LS 2009 Chevrolet Suburban 2500 LT 2009 GMC Sierra 2500 HD SLE 2009 GMC Sierra 2500 HD SLT 2009 GMC Sierra 2500 HD WT 2009 GMC Sierra 3500 HD SLE 2009 GMC Sierra 3500 HD SLT 2009 GMC Sierra 3500 HD WT 2009 GMC Yukon XL 2500 SLE 2009 GMC Yukon XL 2500 SLT 2010 Chevrolet Silverado 2500 HD LT 2010 Chevrolet Silverado 2500 HD LTZ 2010 Chevrolet Silverado 2500 HD WT 2010 Chevrolet Silverado 3500 HD LT 2010 Chevrolet Silverado 3500 HD LTZ 2010 Chevrolet Silverado 3500 HD WT 2010 Chevrolet Suburban 2500 LS 2010 Chevrolet Suburban 2500 LT 2010 GMC Sierra 2500 HD SLE 2010 GMC Sierra 2500 HD SLT 2010 GMC Sierra 2500 HD WT 2010 GMC Sierra 3500 HD SLE 2010 GMC Sierra 3500 HD SLT 2010 GMC Sierra 3500 HD WT 2010 GMC Yukon XL 2500 SLE 2010 GMC Yukon XL 2500 SLT