Manufactured by Zone Offroad | C69N | 2019-24 Silverado/Sierra 1500 Trailboss/AT4 4 inch Lift kit with upper arms, Nitro Shocks, 17" wheels with 4.5" backspacing should be test fit prior to mounting the tire to ensure proper clearance to the steering knuckle/tie rod. All aftermarket wheels should be test fit prior to mounting the tire to ensure proper clearance to the brake caliper, Zone Offroad is a budget friendly lift kit option under the same name as the BDS and Fox suspension family. Offering leveling kits, lift kits, and Fox Shock upgrades, Zone enters the market at an affordable price and gives you the upgrade options to get any desired options and quality that you're looking for. Product information updated on 2026-08-17. This product can ship by Truck Freight