GSC Power-Division Billet S1 camshaft set for BMW B58 S1
GSC Power-Division S1 billet camshaft set is designed for serious turbocharged B58 combinations producing 500-900 WHP. The S1 profile increases airflow and cylinder filling in the upper RPM range while maintaining OEM Double VANOS and Valvetronic functionality. Developed for street, Track Days, and drag racing applications, these camshafts extend the usable powerband beyond the limitations of the factory camshafts, allowing larger turbocharger systems to operate more efficiently at elevated engine speeds but keeping spool quick and responsive. GSC7092S1 camshaft set is designed specifically for B58 Gen 1 engines equipped with OEM exhaust camshaft part number 11318618195. Valve spring upgrade is required when using these camshafts. 7090S1 ADV Duration Duration @ 0.040" Peak Lift Center Line Intake 272° 232° 10.2mm Variable Exhaust 272° 234° 10.4mm Variable