KW (H.A.S) Height Adjustable Spring kits are a great alternative to conventional lowering springs. You are no longer stuck with a fixed lowering height. KW H.A.S. systems allow you to adjust the vehicle ride height with the KW height adjuster even after the kit...

KW (H.A.S) Height Adjustable Spring kits are a great alternative to conventional lowering springs. You are no longer stuck with a fixed lowering height. KW H.A.S. systems allow you to adjust the vehicle ride height with the KW height adjuster even after the kit...

The MagnaFlow 2010-2016 Audi S4 Touring Series Cat-Back Performance Exhaust System 15599 is the perfect partner for your 3.0L 2010-2016 Audi S4 to take on a grand tour or a weekend cruise thanks to the powerful, resonant exhaust note and dyno-proven performance it brings...

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49135. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding...

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49136. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding...

THE ONLY EXHAUST YOU"LL EVER NEED - MBRP Armor Pro Series exhaust systems are backed by a Lifetime Warranty and crafted out of T304 Stainless Steel - the most durable material grade that money can buy.The T304 Stainless Steel tubing is easy to clean...

The Mishimoto racing thermostat for the Audi S4 2010-2016 is designed to help your cooling system operate at peak efficiency, whether you're cruising to your local car meet or tearing up the track. Our thermostat begins to open 25.2°F (14°C) earlier than the stock...

MSS is an award-winning adjustable modular suspension solution which has been developed and engineered for safety, comfort, and performance. They come with a lifetime warranty. The relatively low initial spring rate absorbs small bumps in the road, thereby increasing grip. It then transitions to...

NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior...

PowerStop is on a mission to deliver an easy way for any driver to upgrade their brakes - no matter where or how they use their vehicle. Brake maintenance doesn't stop at replacing brake pads and rotors. When it comes to the wear and...

The Power Stop Z16 Evolution ceramic brake pads feature a ceramic formula designed to maximize stopping power while reducing brake dust & eliminating noise. Using OE positive mold technology along with a thermal scorched pad surface, Z16 pads maintain consistent wear and performance while...

The Power Stop Z17 Evolution Plus ceramic brake pads feature a ceramic formula designed to maximize stopping power while reducing brake dust & eliminating noise. Using OE positive mold technology along with a thermal scorched pad surface, Z17 pads maintain consistent wear and performance...

The Power Stop Z23 Evolution Sport ceramic brake pads are designed as an upgrade over stock brakes to reduce brake dust & eliminate noise, so you can ride in comfort. These brake pads are made with a low-dust ceramic formula, infused with carbon-fiber for...

The Power Stop Z26 Street Warrior ceramic brake pads are designed as an upgrade over stock brakes to reduce brake dust & eliminate noise on muscle cars and performance vehicles. These brake pads are made with a low-dust ceramic formula, infused with carbon-fiber to...

The Power Stop Z16 Evolution ceramic brake pads feature a ceramic formula designed to maximize stopping power while reducing brake dust & eliminating noise. Using OE positive mold technology along with a thermal scorched pad surface, Z16 pads maintain consistent wear and performance while...