2.5L 5-Cylinder Valve Spring and Retainer Kit

The Supertech Valve Spring and Retainer Set is engineered for enhanced performance in Audi and VW 2.5T/2.5L 5-cylinder engines. This combination ensures durable performance and allows for safely increasing your engine's power range and rev limit. Performance valve springs with higher spring rates are crucial for reducing valve float and preventing engine damage at higher RPMs, especially when exceeding 7500rpm. The low-weight, ultra-durable titanium retainers further aid the valvetrain by allowing it to rev higher and faster. While titanium offers excellent fatigue life for most street applications, it is best suited for all but the highest mileage street use. Each Supertech valve spring is crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, providing superior performance and durability at high RPMs. Advanced computer design ensures wire stress levels remain within safe limits, and harmonics are controlled, making these springs highly durable even in extreme conditions. The titanium retainers are CNC machined for an exacting fit. This kit is designed as a direct fit with no machining or modifications required, and it works with all stock or aftermarket valves. Fitment: - 2006-2012 VW Golf/Jetta/Beetle/Passat 2.5L - 2012-2013 Audi TT-RS 2.5T - 2018-2020 Audi TT-RS 2.5T EVO - 2018-2020 Audi RS3 2.5T EVO