Zone Offroad 2" Torsion Key Leveling Kit 11-19 GM 2500HD / 3500 SYN-8555-30-HD supplying air for an air

supplying air for an air suspension system

A Carrier Bearing Drop Kit will be needed if you have a 2-Piece Rear Driveshaft to ensure the correct alignment and keep vibrations to a minimum

you will need a different gearbox

These are OEM spec and are NOT suitable replacements if knurled ball joints have been installed previously

Zone Offroad 2" Torsion Key Leveling Kit 11-19 GM 2500HD / 3500 SYN-8555-30-HD supplying air for an airLevel the front end of your 2011 2019 GM Duramax with the Zone off road 2" leveling kit with 2" rear block kit. This kit gives you the ability to fit up to a 34" tall tire all while retaining the tail high look. This kit features castings that are resonance frequency tested to ensure they are defect free and ready to withstand any abuse.