Eliminate problematic valve float with the APR Valve Spring and Retainer Kits! This comprehensive valve spring and retainer replacement solution is designed for optimal valve control without overpowering the OEM valves or damage the aluminum spring seat.

The valve springs use a beehive design that reduces the mass, while the ovate wire design balances out stress distribution to improve control at higher RPM bands. Meanwhile, the valve spring retainers are lighter when compared to the stock units, resulting in impressive valve control without increasing stiffness that could break valves in half.

Audi Performance and Racing (APR LLC) was founded in 1997 by automotive engineers Brett Augsburger and Stephen Hooks to provide Volkswagen Auto Group vehicles with reliable and high-quality aftermarket upgrades. From their very first product, an ECU software upgrade for the 1997 Audi A4, APR branched out to exhaust and turbo systems, along with other hardware/software and data-logging implements for engine and transmission controllers, including, but not limited to: intakes, intercoolers, suspension, brake systems, wheels, among others. APR is a trusted name for Volkswagen, Audi, Skoda, Porsche, and other vehicles, boasting a massive selection of products for customers. APR delivers your software via a 24-hour automated global delivery system from its advanced facility in Opelika, Alabama.

High rev applications are an easy task for the APR Valve Spring and Retainer Kits, thanks to its innovative, weight-saving design.

Audi Performance and Racing (APR LLC) was founded in 1997 by automotive engineers Brett Augsburger and Stephen Hooks to provide Volkswagen Auto Group vehicles with reliable and high-quality aftermarket upgrades. From their very first product, an ECU software upgrade for the 1997 Audi A4, APR branched out to exhaust and turbo systems, along with other hardware/software and data-logging implements for engine and transmission controllers, including, but not limited to: intakes, intercoolers, suspension, brake systems, wheels, among others.

APR is a trusted name for Volkswagen, Audi, Skoda, Porsche, and other vehicles, boasting a massive selection of products for customers. APR delivers your software via a 24-hour automated global delivery system from its advanced facility in Opelika, Alabama.

California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.