With today's valve train components and the steep acceleration rates on hydraulic roller cams, it isnt possible to properly control the valves and valve train by simply increasing valve spring pressure. This usually results in collapsed lifters. Airflow Research has created a solution! The Hydra-Rev applies additional spring pressure to the lifter body, not the plunger. This vastly improves valvetrain stability which results in more power at higher RPM without any loss in low end torque.

In addition, Hydra-Rev eliminates the danger and the potential damage to components that valve float can cause. The easy to install Hydra-Rev Kit comes complete with all the components you need and requires no additional machining or modifications when installed on stock or aftermarket cylinder heads.