GSC P-D BMW S58 Beehive Valve Spring & Ti Retainer Kit (Max Boost 70PSI)

GSC Power Division is known for making well-built valvetrain components for performance applications. This Beehive Valve Spring and Titanium Retainer Kit is specifically made for the BMW S58 engine, a powerful powerplant found in many modern M cars. If you're building a high-performance S58 and pushing the limits with boosted air, this kit is designed to handle the increased demands on your valvetrain.

The beehive shape of these springs allows for a lighter retainer and a smaller spring diameter, which reduces mass and inertia. This means the springs can react faster at higher RPMs, helping to prevent valve float when you're really leaning on the engine. The kit includes titanium retainers, which are significantly lighter than steel ones. This further reduces the overall valvetrain mass, contributing to improved high-RPM performance and reliability. This kit is rated for builds using up to 70 PSI of boost, giving you a solid margin for serious performance tuning.

When rebuilding the top end of your S58, using a matched set of springs and retainers like this GSC kit ensures proper function and durability. It's important to follow the manufacturer's installation instructions carefully to ensure the valvetrain operates correctly and safely. This kit is a key component for anyone looking to extract maximum performance from their S58 engine.