Pro Series Shaft Mount Rocker System

The Jesel KPS499187 Pro Series Shaft Mount Rocker System is a high-performance valvetrain component trusted by championship-winning racers and top engine builders worldwide. This system is specifically designed for Chevy LS7 style engines utilizing Bill Mitchell Products (BMP) aluminum 12-degree cylinder heads, ensuring optimal compatibility and performance. Constructed from a custom-blended 7000 Series aluminum alloy, this rocker system offers superior tensile strength at elevated temperatures compared to standard 2024 alloys. This advanced material contributes to an extremely durable yet lightweight valvetrain assembly. Jesel's FEA-designed bodies minimize deflection, ensuring that lobe lift is translated directly to valve lift without waste, thereby maximizing engine efficiency. Jesel's Pro Series rocker systems are custom manufactured to meet specific needs, with available options including tailored rocker ratios, adjuster offsets, and lightening configurations. Standard features include a shot-peened surface finish for enhanced fatigue resistance, a profiled rocker tail, and a clipped-pin nose roller for smooth operation. Rocker stands can also be custom ordered to accommodate longer-than-stock valve lengths, providing a truly bespoke solution.