Pro-Action has been the innovator of front fork valve body design technology. Our pistons match flow dynamics of the fork with critical edge of hydralic lock valve body designs. We now produce 12 types of valve bodies. These valve bodies have the most direct flow patterns of all valve bodies produced. This direct flow design eliminates harshness in the fork and reduces rider fatigue. The edge of hydraulic lock design eliminates bottoming. Super Cross Valving uses a two-stage system. Motocross valving uses a two-stage system with a quick opening circuit for choppy acceleration bumps. The off-road valving uses a three-stage system to eliminate deflection off rocks and roots and provides excellent mid-range manners and great resistance to bottoming. The result is the finest working front fork system ever built. Imagine a front fork that stands up tall, is plush on initial hits, firm on big hits, and progressively soaks up everything in between