Valve Locks - 10 Degree -.050

Valve Locks - 10 Degree -.050 are precision-engineered components designed for high-performance engine builds where valve control and reliability are non-negotiable. These chromoly jumbo valve locks secure valve stems in place, preventing unwanted valve movement during extreme rpm and boost conditions common in racing, turbocharged, and naturally aspirated performance applications. A set of 16 locks provides complete coverage for eight-cylinder engines or supplies for multiple cylinder builds.

Manufactured by CROWER, a trusted name in valve train components, these locks feature a 10-degree geometry optimized for 11/32 inch valve stems and deliver 0.050 inches less height than standard alternatives—a critical advantage in tight valve spring pocket configurations or when maximizing clearance for custom cylinder head work. The chromoly construction with cadmium plating offers superior fatigue resistance and corrosion protection, essential for durability under sustained high-load engine operation. The jumbo profile ensures secure retention while the 10-degree angle promotes proper valve stem contact geometry.

Engine builders, performance shops, and dedicated enthusiasts rely on these valve locks for street machines, circle track applications, and dyno-proven power builds where valve float or spring surge could cause catastrophic failure. Compatibility with 11/32 inch valve stems makes them suitable for most modern small-block and big-block applications after fitment verification. Installation requires proper valve spring seat height measurement and correct lock positioning to ensure reliable clamping force throughout the engine's entire operating range.