Seller notes

Go Race Parts presents... Our special on Ferrea Racing Valves & Components! This listing is for a complete set of 24 single valve springs and retainers for 2006-2016 BMW N54 engines This listing includes Ferrea part numbers: S10158 x 24 (single valve springs) Outside Diameter: 22.38mm Inside Diameter: 15.52mm Seat Pressure: 70 lbs @ 36.5mm Open Pressure: 170 lbs @ 26.5mm Rate Inch: 254 lbs Coil Bind: 23.15mm Max Net Lift: 12.5mm Ferrea E11130 x 12 (titanium retainers exh side) Ferrea E11131 x 12...

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