Conical Valve Springs for BMW S55 Turbo

Supertech conical valve springs use a tapered coil design with a constantly varying natural frequency to disrupt harmonics and improve valvetrain stability at high RPM.

Each spring is made from premium Superclean Chrome Silicon Vanadium steel alloy with computer-designed wire stress and controlled harmonics for consistent pressure and long fatigue life. For the BMW S55 Turbo, Supertech offers 4 part numbers. Spring rates range from 7.25 to 8 lbs/mm.

Key Features

• Conical design with constantly varying natural frequency
• Reduced retainer mass
• Premium Superclean Chrome Silicon Vanadium steel alloy
• Computer-designed wire stress and controlled harmonics
• Improved stability at high RPM
• Sold individually or as engine sets

Applications

Supertech conical valve springs fit the BMW S55 Turbo in high-RPM builds. Use the matching retainer and verify installed height and coil bind clearance before assembly.