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2025 Audi S4 is a wonderful vehicle from the factory. The parts you will find in our catalog will help you bring the best out of your S4. We have 118 Coilover Kits available for your 2025 S4 all priced at lowest possible price backed by FREE SHIPPING.
We price match competitors ... Shop with confidence.
H&R Ultra Low Coilovers lowers your vehicle front by 1.2" - 2.3" and rear by 1.2" - 2.3"
H&R Street Performance Coilovers lowers your vehicle front by 1.0" - 1.9" and rear by 1.0" - 1.9"
H&R Street Performance Coilovers lowers your vehicle front by 1.2" - 2.1" and rear by 1.0" - 2.0"
H&R Street Performance Coilovers lowers your vehicle front by 1.3" - 2.3" and rear by 1.2" - 2.0"
H&R Street Performance Coilovers lowers your vehicle front by .50" - 1.4" and rear by .50" - 1.4"
The Bilstein B16 (PSS9) suspension kit is a race inspired system, providing the ultimate in high performance tuning. The manually adjustable monotube gas shock absorbers feature 9-stage precise compression and rebound settings, from comfort to competition. The threaded body allows accurate adjustability of the front and rear progressive springs to achieve the vehicle ride height (30mm to 50mm), center of gravity and level of performance handling desired. Bilstein's patented Triple-C-Technology coating ensures long-lasting resistance to corrosion.
H&R Street Performance Coilovers lowers your vehicle front by .50" - 1.4" and rear by .50" - 1.4"
H&R Premium Performance Coilovers lowers your vehicle front by 1.6" - 2.5" and rear by 1.3" - 2.0"
H&R RSS+ Coilover lowers your vehicle front by 1.2" - 2.3" and rear by 1.2" - 2.3"
H&R Street Performance Coilovers lowers your vehicle front by 1.6" - 2.5" and rear by 1.3" - 2.0"
The Bilstein B14 (PSS) suspension kit features both coilover and standard monotube gas shocks with performance-level valving, with application specific, progressive rate coil springs. The solid aluminum spring seat and lock nut allows for precise adjustment of the vehicle's lowered ride height from 30mm to 50mm, even while installed. Bilstein's patented Triple-C-Technology coating ensures long-lasting resistance to corrosion. The B14 (PSS) suspension kit is ideal for the driver looking to set a car's ride height for both looks and improved handling.
The Bilstein B16 (PSS10) suspension kit is the ultimate race inspired suspension system, delivering unsurpassed driving performance in any situation. This suspension kit puts you in complete control, providing the kind of precise suspension tuning formerly available only on race cars. From a weekend of competition to daily driving, this system provides perfect handling performance for every situation. The manually adjustable damping mono-tube gas shock absorbers feature 10-stage precise compression and rebound settings, from comfort to competition. The Bilstein B16 (PSS10) suspension kit utilizes debris resistant round threads on these dampers to ensure spring adjustment remains effortless throughout the life of the kit. The surface is coated with Triple-C-Technology coating to ensure long lasting resistance to corrosion and flashy good looks.
H&R Street Performance Coilovers lowers your vehicle front by 1.6" - 2.5" and rear by 1.3" - 2.0"