Supertech: Conical Valve Spring Kit: BMW: N54/N55/S55

Supertech valve springs are computer designed to ensure smooth harmonics under high RPM and load. The stress levels are kept under control and fatigue is reduced for long durability under extreme conditions. These springs are made of premium Super clean Chrome Silicon Vanadium steel alloy, which is a tough alloy that was designed for higher performance and durability at high RPM's and memory retention.

SPRK-FE20N54-BE
Conical Valve Spring Kit
• OutSpr.OD: 24.4mm
• OutSpr.ID: 17.6mm
• InnSpr.OD: 21mm
• InnSpr.ID: 14.2mm
• Press.Seat: 75@36.5
• Press.Open: 155@10
• Max Lift: 12mm
• Coil Bind: 23.2mm
• Rate: 8ibs/mm
• Retainer: RET-BMN54-TI (5mm)
• Retainer: RET-BMN54-TE (6mm)

Engines
BMW - 3.0l Turbo N54B30A
BMW - 6cyl 3.0l Turbo N54B30A
BMW - 6cyl 3.0l Turbo N54B30A