BMW B46 Valve Springs by SuperTech

Supertech Valve Springs for the BMW B46 engine are engineered for high-performance builds that demand reliable valvetrain control at high RPMs. Whether you're chasing power on the street or building for track duty, these springs are designed to reduce valve float, improve stability, and maintain precise valve operation under extreme conditions.

Developed with advanced materials and exacting tolerances, Supertech valve springs offer significantly higher spring rates than factory B46 components. This upgrade allows your engine to rev higher and respond more precisely, especially in boosted or cammed applications where factory springs fall short.

Trusted by performance enthusiasts, engine builders, and racing teams worldwide, Supertech’s B46 valve spring kits are built for durability, consistency, and top-tier performance. They’re a must for anyone looking to extract more power while maintaining long-term reliability.

Key Benefits:

• Improved high-RPM stability and valve control
• Reduces risk of valve float and power loss
• High-strength materials for extended durability
• Optimized spring rates for high-performance B46 applications

 Installation requires the expertise of an engine builder.