Maximize the performance potential of your BMW S58 engine with this complete Kelford Camshaft and Valve Spring Kit, now available from 5150 AutoSport. Designed specifically for the twin-turbo 3.0L S58 engine found in the G80 M3, G82 M4, and other modern M-series platforms, this kit delivers precision-engineered valvetrain components built for serious power.
This all-in-one upgrade package includes your choice of Kelford’s Stage 2 or 3 camshaft set, matched with high-performance dual valve springs and titanium retainers for superior valvetrain control at high RPM.
Stage 2 | BMW S58
Strip | Drag Race | Circuit Race | Road Race | Roll Race | Drift | E85
292° / 280° – 10.40mm / 10.60mm Valve Lift
BMW M Series Racing Camshafts professionally built BMW S58 engines making 800hp-1400hp. Turbo sizing 66-75mm. Great with aftermarket intake plenums. Maintains full use of Valvetronic and Dual VANOS. Can run Valvetronic locked in full open position when using an aftermarket throttle body.
Note: Must check intake intermediate rockers for clearance to the new racing cam lobe; OEM pressed steel rockers have sharp edges which may damage the bigger cam lobe. Trim and deburr as necessary.
Stage 3 | BMW S58
Strip | Drag Race | Roll Race | Drift | E85 | Methanol
298° / 288° – 10.40mm / 10.80mm Valve Lift
Please Note: Must check intake intermediate rockers for clearance to the new racing cam lobe; OEM pressed steel rockers have sharp edges which may damage the bigger cam lobe. Trim and deburr as necessary.
All engine modifications should be performed by a qualified professional to ensure a proper and safe installation process and a reliable, optimally performing engine.
Each camshaft set is crafted from Kelford’s premium billet cores and CNC-ground for consistency, performance, and durability. The included valve spring set ensures stability at elevated boost levels and extended RPM ranges—critical for upgraded turbo systems and forged internals.
Features:
- Designed specifically for BMW S58 (G80 M3, G82 M4, X3M, X4M)
- Choice of Stage 2 or 3 camshaft profiles depending on power goals
- Kelford dual valve springs and titanium retainers included
- Optimized for increased lift, duration, and airflow
- Compatible with upgraded turbos and standalone ECUs
- Dyno-proven results with proper tuning and supporting mods
BMW S58 Applications:
2 Series
2023-Present G87 M2
3 Series
2021-Present G80 M3
4 Series
2021-Present G82/G83 M4
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