BMW E60/E82/E91/E92) (N54) Type/Material/Application: Single Spring - Turbo PAC Enhanced Alloy Outside Diameter: 22.38 mm Inside Diameter: 15.52 mm Seat Pressure: 70 lbs @ 36.5 mm Open Pressure: 170 lbs @ 26.5 mm Rate Inch: 254 lbs Coil Bind: 23.15 mm Max Net Lift: 12.5 mm This Spring requires 2 Ferrea Titanium Retainers (Exhaust) # E11130 and (Intake) # E11131 and Factory supplied Spring Seat Locator /Valve Hat Seal.
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