The Brian Crower Single Spring, Titanium Retainer, and Seat Kit for the Scion 2AZ-FE engine is a high-performance upgrade designed to enhance valvetrain stability and durability. Crafted by Brian Crower, Inc., this kit includes single springs, titanium retainers, and seats that are engineered to withstand the demands of high RPM and aggressive driving conditions. The use of lightweight titanium components reduces overall valvetrain mass, contributing to improved response and reliability. This kit is ideal for enthusiasts seeking to optimize engine performance, especially in high-stress applications, by providing a robust and reliable valvetrain upgrade.

Designed specifically for the 2005-2010 Scion xA and xB models equipped with the 2AZ-FE engine, this kit serves as a direct replacement for stock components. It is suitable for street, track, and performance tuning applications where valvetrain stability is critical. Installation involves replacing existing springs, retainers, and seats with these upgraded components, ensuring compatibility and a secure fit. The kit includes all necessary parts for a complete upgrade, making it a reliable choice for performance-focused builds and engine rebuilds.