Valve Spring and Retainer Set

The Supertech JHM-B6B7S4VSRS is a heavy-duty, high-rate valve spring and titanium retainer set specifically engineered for the B6-B7 S4 4.2L V8 engine. This comprehensive kit addresses the critical failure points found in the stock valvetrain, particularly the weak and prone-to-failure intake valve springs. By replacing all springs, this set ensures greater reliability and performance. The kit features a single spring setup for the intake valves and a more robust dual-spring setup for the exhaust valves. Complementing the springs are ultra-lightweight titanium retainers. This combination significantly reduces the overall weight of the valve, spring, and retainer assembly. The reduction in reciprocating mass allows for higher RPM operation by decreasing the inertia required to actuate the valves, leading to a more stable and durable valvetrain. This upgrade is so beneficial that JHM Motorsports includes it in all of their rebuilt cylinder heads. Given that the cost of these performance components is comparable to OEM springs alone, choosing this heavy-duty, lightweight, and more durable set is presented as a clear advantage for engine longevity and high-RPM performance. This product fits the following vehicles: Audi S4 B6 (2003-2005) 4.2l V8 40v, Audi S4 B7 (2005.5-2009) 4.2l V8 40v, and Audi allroad C5 (2001-2005) 4.2l V8 40v. The product is also subject to an off-road use disclaimer due to potential emissions regulations.