BMW N54 Conical spring kit SPR-FE20-BE(24) - 75lbs @ 36.5mm - Rate: 8lbs/mm - CB @ 13.3mm lift - Max lift: 12mm - Intake RET-BMN54/TI (12) - Exhaust RET-BMN54/TE (12) - Use with Factory valve stem Seal
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BMW N54/55 Conical spring kit SPR-FE20-BE(24) - 75lbs @ 36.5mm - Rate: 8lbs/mm - CB @ 23.2mm lift - Max Recommended lift: 12mm - Intake RET-BMN54/TI (12) - Exhaust RET-BMN54/TE (12) - Use with Factory valve stem seal - Factory Keepers OK.
BMW N54/55 Conical spring kit SPR-FE20-BE(24) - 75lbs @ 36.5mm - Rate: 8lbs/mm - CB @ 23.2mm lift - Max Recommended lift: 12mm - Intake RET-BMN54/TI (12) - Exhaust RET-BMN54/TE (12) - Use with Factory valve stem seal - Factory Keepers OK.
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