Description
On the 2018+ Audi RS5 (B9, Coupe, RS5), KW V4 is best approached as a chassis-tuning upgrade first and a ride-height change second.
KW V4 expands the tuning window with low-speed rebound plus separate low- and high-speed compression adjustment. That additional compression control is valuable when a build needs to distinguish slower platform motions such as pitch and roll from sharper wheel inputs over curbing, joints and bumps. The application-specific calibration is intended to give the chassis a more deliberate response than a one-size-fits-all suspension combination.
Why Choose the KW V4 for This Application?
Choose the V4 when the setup is developed enough that high-speed and low-speed damper events need to be treated differently. This is especially useful when ride quality over sharp impacts must coexist with stronger pitch and roll control.
Key Features
- Low-speed rebound adjustment
- Separate low-speed and high-speed compression adjustment
- Remote-reservoir architecture on applicable kits
- Height adjustment matched to the vehicle application
Vehicle Fitment
- Make: Audi
- Catalog Application: 2018+ Audi RS5 (B9, Coupe, RS5)
- Configuration: Coupe; with DRC
- KW Jobber Model Years: 2018+
- KW Part Number: 3A7100CJ
Technical Specifications
- Front Height Adjustment: 5-25 mm (0.2-1.0 in)
- Rear Height Adjustment: 5-25 mm (0.2-1.0 in)
- Front Spring Rate: 455 lb/in
- Rear Spring Rate: Progressive-rate spring (KW jobber designation)
- Front Axle Weight Limit: -1240 kg (KW jobber value)
- Rear Axle Weight Limit: -1220 kg (KW jobber value)
Enthusiast Setup Perspective
This setup makes the most sense when the suspension is being treated as part of a complete package. Final ride height, alignment, tire choice and available bump travel should be considered together rather than setting the car as low as possible. After installation, establish ride height and alignment first, then make damper changes in small increments and record them so the effect of each adjustment remains clear.
Important KW Fitment Notes
- KW Note 2: Height adjustable front and rear axles (front axle threaded strut housings, rear axle adjustable springs + dampers)
- KW Note 67: Valving is adjusted by adjustment knobs, rebound is only adjustable if the top of the piston rod is accessible. This will depend on the design of the vehicle.
- KW Note 88: Electronic damping control has to be deactivated. Deactivation kit is included in the delivery.
- KW Note 409: Only for cars with damper diameter 48.5mm (not 50mm) on the front axle; measured at the damper body just below the OE spring seat.
Fitment note: Specifications above are tied to the exact KW part number shown and the application data in the supplied KW jobber sheet. Confirm the vehicle's drivetrain, factory electronic suspension, axle weight and any listed hardware requirements before ordering.