Original: $1,288.00
-70%$1,288.00
$386.40The Story
Riaction GT1 Coilovers for the 2009-2016 Audi S4 (B8) are a premium suspension upgrade designed for drivers who want the perfect balance of ride comfort, performance, and style. Built with high-quality materials and precision engineering, these coilovers deliver reliable handling and long-term durability while allowing you to achieve the aggressive lowered stance you’re after.
Each GT1 kit features a mono-tube shock design with a 52mm electroplated carbon steel body for consistent damping and strength. With 32 levels of damping adjustment, you can fine-tune your suspension setup for daily driving, spirited street performance, or weekend track use. The CNC-machined aluminum pistons, cold-wound performance springs, and polyurethane seals ensure smooth operation, precise handling, and reduced maintenance over time.
Engineered to be fully rebuildable and backed by a 2-year warranty, Riaction GT1 Coilovers offer the adjustability and performance expected from a high-end aftermarket suspension system—making them a smart investment for enthusiasts looking to improve handling, achieve the right stance, and enhance overall driving dynamics.
Features
- Full Length Ride Height Adjustment
- 32 Damping Adjustment Levels
- Mono-Tube Linear Damper Design
- Seamless 52mm Electroplated Carbon Steel Shock Body
- O.D. 20mm Piston Rod For MacPherson Suspension
- O.D. 14mm Piston Rod For Non-MacPherson Suspension
- Unique 44mm High-Flow CNC 6061 Aluminum Piston
- Unique Thinned CNC 6061 Aluminum Floating Piston
- Polyurethane Oil Seal
- SAE9254 Cold-Wound Spring
- Multi-Thickness Valving Shims
- Unique Low-Gas Pressure Design
- 7.5w Compounded Suspension Fluid
- Fully Rebuildable
Specifications
| Part Number | AD-004-SS |
| Part Name | Riaction GT1 Coilovers |
| Vehicle | 2009-2016 Audi S4 |
| Chassis Code | B8 |
| Adjustment Type | 1-Way |
| Damping Adjustable | Yes |
| Height Adjustable | Yes |
| Spring Rates - Front | 10K |
| Spring Rates - Rear | 8K |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | Divorced |
| Front Spring Length (Default) | 7 inches |
| Rear Spring Length (Default) | Not Applicable |
| Swift Springs Optional | No |
| Camber Plates - Front | No |
| Camber Plates - Rear | No |
Vehicle Fitment
- 2009 Audi S4 (B8)
- 2010 Audi S4 (B8)
- 2011 Audi S4 (B8)
- 2012 Audi S4 (B8)
- 2013 Audi S4 (B8)
- 2014 Audi S4 (B8)
- 2015 Audi S4 (B8)
- 2016 Audi S4 (B8)
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Riaction GT1 Coilovers for the 2009-2016 Audi S4 (B8) are a premium suspension upgrade designed for drivers who want the perfect balance of ride comfort, performance, and style. Built with high-quality materials and precision engineering, these coilovers deliver reliable handling and long-term durability while allowing you to achieve the aggressive lowered stance you’re after.
Each GT1 kit features a mono-tube shock design with a 52mm electroplated carbon steel body for consistent damping and strength. With 32 levels of damping adjustment, you can fine-tune your suspension setup for daily driving, spirited street performance, or weekend track use. The CNC-machined aluminum pistons, cold-wound performance springs, and polyurethane seals ensure smooth operation, precise handling, and reduced maintenance over time.
Engineered to be fully rebuildable and backed by a 2-year warranty, Riaction GT1 Coilovers offer the adjustability and performance expected from a high-end aftermarket suspension system—making them a smart investment for enthusiasts looking to improve handling, achieve the right stance, and enhance overall driving dynamics.
Features
- Full Length Ride Height Adjustment
- 32 Damping Adjustment Levels
- Mono-Tube Linear Damper Design
- Seamless 52mm Electroplated Carbon Steel Shock Body
- O.D. 20mm Piston Rod For MacPherson Suspension
- O.D. 14mm Piston Rod For Non-MacPherson Suspension
- Unique 44mm High-Flow CNC 6061 Aluminum Piston
- Unique Thinned CNC 6061 Aluminum Floating Piston
- Polyurethane Oil Seal
- SAE9254 Cold-Wound Spring
- Multi-Thickness Valving Shims
- Unique Low-Gas Pressure Design
- 7.5w Compounded Suspension Fluid
- Fully Rebuildable
Specifications
| Part Number | AD-004-SS |
| Part Name | Riaction GT1 Coilovers |
| Vehicle | 2009-2016 Audi S4 |
| Chassis Code | B8 |
| Adjustment Type | 1-Way |
| Damping Adjustable | Yes |
| Height Adjustable | Yes |
| Spring Rates - Front | 10K |
| Spring Rates - Rear | 8K |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | Divorced |
| Front Spring Length (Default) | 7 inches |
| Rear Spring Length (Default) | Not Applicable |
| Swift Springs Optional | No |
| Camber Plates - Front | No |
| Camber Plates - Rear | No |
Vehicle Fitment
- 2009 Audi S4 (B8)
- 2010 Audi S4 (B8)
- 2011 Audi S4 (B8)
- 2012 Audi S4 (B8)
- 2013 Audi S4 (B8)
- 2014 Audi S4 (B8)
- 2015 Audi S4 (B8)
- 2016 Audi S4 (B8)
