AST Digressive Piston Upgrade – Suits 40mm & 46mm AST Dampers (Set of 4)

AST Digressive Piston Upgrade – Suits 40mm & 46mm AST Dampers

Application: Suits AST 40mm and 46mm damper bodies | Does 4 shocks

Part Numbers:

• 35PI-L7-A1-012 — 40mm Digressive Piston
• 35PI-L7-D9-012 — 46mm Digressive Piston

Upgrade your AST dampers with a digressive piston profile for improved handling response and greater low-speed damping sensitivity. The digressive piston design provides a softer initial response at low shaft velocities while building resistance more aggressively at higher velocities — ideal for track use where precise body control and driver feedback are critical.

Each kit services a full set of 4 shocks, making it a complete solution for your AST-equipped vehicle. Compatible with AST 40mm and 46mm damper bodies across the 5100, 5200, and 5300 series platforms.

Why AST Suspension?

• ✅ Engineered and manufactured in the Netherlands to exacting motorsport tolerances
• ✅ Monotube damper architecture for superior heat dissipation and consistent performance
• ✅ CNC-machined aluminium components for precision fitment and reduced unsprung weight
• ✅ Fully rebuildable and serviceable — upgrade pistons, valving, and internals as your build evolves
• ✅ Trusted by race teams and high-power builds worldwide across circuit, rally, and time attack disciplines