AST Digressive Piston Upgrade- Suits 40mm and 46mm AST Dampers (Set of 4)
- Secure checkout
- 14-day returns
- Genuine parts
- Melbourne-based support
Universal fit
No vehicle selection needed.
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
In Melbourne? Fit it in our workshop.
We fit parts in-house at the RevZone workshop. Book a time and bring your car in.
Description
A digressive piston upgrade for AST 40mm and 46mm damper bodies. The digressive profile is softer at low shaft speeds and builds resistance more sharply as speeds rise, which keeps body control tight over kerbs and quick direction changes while leaving small bumps comfortable. It is a worthwhile change for cars that see regular track use and need clearer feedback from the chassis.
Features
- Digressive piston profile for firmer high-speed damping control
- Softer low-speed response for better compliance and feel
- Each kit services a full set of four shocks
- Available for AST 40mm and 46mm damper bodies
Fitment
- DPP 40mm (35PI-L7-A1-012) suits AST 40mm damper bodies
- DDP 46mm (35PI-L7-D9-012) suits AST 46mm damper bodies
Notes
- Check your damper body size before ordering
- Fitting requires the dampers to be stripped and rebuilt by a suspension specialist
- A revalve to suit the new piston is recommended at the same time
Specifications
- Part Numbers
- 35PI-L7-A1-012 (40mm), 35PI-L7-D9-012 (46mm)
- Brand
- AST Suspension
- Product Type
- Damper Piston Upgrade
- Piston Profile
- Digressive
- Damper Sizes
- 40mm and 46mm
- Kit Services
- 4 shocks
- Made In
- Netherlands
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.