This Tow Kit lifts your truck 4 over factory when aired out. It is not a one size fits all with. It is the PROPER kit for your Silverado 1500.Manual Fill Tow Kit as shown. The item "Air Tow Assist Rear Air Bag Kit Bolt On 1999-06 Chevy Silverado 1500 4 LIFT" is in sale since Thursday, July 5, 2018. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Suspension & Steering\Lift Kits & Parts". The seller is "chassis_tech" and is located in Mesa, Arizona. This item can be shipped worldwide.