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 150 psi 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! Shock absorbers are sold individually. Shock absorbers are sold individually.