The Riaction GT1 Coilovers for the 2002-2009 Audi A8 D3/4E deliver a premium, adjustable suspension upgrade built for drivers who want more from their A8 D3 than the factory setup can offer. These Audi A8 coilovers are engineered to pair street comfort with canyon and track capability, giving you the stance, handling, and adjustability you”ve been chasing without compromising daily driveability. Whether you track your D3 A8 on weekends or log daily miles, this D3 coilover kit dials in ride height and damping to match how you actually use the car.
Every GT1 set features a monotube damper with 32 levels of damping adjustment, so you can tune ride quality to match the road, the weather, or your driving mood. Full-length ride-height adjustment separates preload from ride height — meaning you can drop the A8 D3 to the height you want while preserving spring travel and shock stroke. Riaction coilovers for the 2002-2009 Audi A8 are fully rebuildable and backed by a 2-year warranty, making the GT1 a long-term suspension investment rather than a disposable upgrade.
GT1 Series Technology
Features
Specifications
| Part Number | AD-022-SS |
| Part Name | Riaction GT1 Coilovers |
| Vehicle | 2002-2009 Audi A8 |
| Chassis Code | D3/4E |
| Drivetrain | AWD |
| Damping Adjustment | 1-Way |
| Ride-Height Adjustable | Yes |
| Spring Rate – Front | 14 Kg/mm |
| Spring Rate – Rear | 10 Kg/mm |
| Top Mounts – Front | OEM |
| Top Mounts – Rear | OEM |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | |
| Notes | – |


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