Product information updated on 2021-08-25, Manufactured by Zone Offroad - Part Number ZON:C2301, 2001-10 Chevy 2500/3500HD 3 inch box kit, RPO Code: FT2, FT3, FT4, FT5, FT6 or FT7, 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.