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Digressive Working Piston Assembly
The piston head design allows independent tuning of the compression and rebound damping forces to provide optimum ride comfort and performance without compromise. It features fewer parts than most conventional twin tube and so-called “adjustable” shock designs. This simple, yet exceptionally functional digressive design contributes to the extreme durability and long life of Bilstein Shock Absorbers.
Keeps dirt out and maintains a nearly friction-free surface for longer life.
Instantly reacts and adjusts for any condition… smooth road, rough road or no road. Provides maximum vehicle body motion control while maintaining superior comfort.
Provides superior tube strength while maximizing heat dissipation and shock life.
Eliminates the possibility of oil foaming and performance loss.
As the piston moves, oil flows through independent passageways for rebound and compression. Valving discs stacked on both sides of the piston, vary in size and thickness. These discs deflect off their seat allowing oil to flow past the piston. As suspension speed increases, more discs in the stack come into play restricting the flow of oil through the piston, increasing the shock valving and slowing the suspension movement, eliminating the need for a manually adjustable shock.
