Please note: All camshafts must be installed by a professional engine builder, using the provided camshaft specification sheet. The builder is responsible for verifying piston-to-valve clearance and setting engine timing according to the cam card specifications, not the factory settings.
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
BMW M Series Stage 3 drag racing cams designed for professionally built S58 engines producing 1400hp+. Turbo sizing 76mm+ on high boost. Ethanol blend or methanol.
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
- 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
X3 Series
2019-Present F97 X3M
X4 Series
2019-Present F98 X4M
