These Penske shocks were designed to provide the best possible performance in a controlled cost environment. They feature an interal nitrogen chamber with a floating sperator piston. These threaded bodied shocks utilize an adjuster nut (PK6036-04), and a spring retainer (PK6038-50).

If shipped express by air the shocks must ship uncharged and will require charging with nitrogen before use.  Nitrogen charged shocks may only be shipped ground.