The New Zone Nitro Series shocks absorber offers the ultimate in control and performance. The full displaced valving offers a better valving range on both the compression and extension travel. This vehicle specific valving is pressurized with nitrogen gas. This gas charge ensures split second response and reduced aeration. Combine these features with the special Fluon banded piston and this shock is built to perform!

This is the first front shock to market to fit the Leveling kit on the 2011-2012 GM 2500/3500 HD  with the large super heavy duty top bar pin and clevis mount for the bottom way Cool!!!!!