Transform your BMW M20 engine with a CAT Cams camshaft for precision performance and enhanced driving dynamics. The iconic M20 engine, known for powering models such as the BMW E12, E21, E28, and E30, delivers solid performance for both enthusiasts and racers. CAT Cams offers camshaft profiles tailored for various driving styles, ensuring you find the ideal solution for your needs—whether for street driving, rally racing, or competitive track use.
CAT Cams provides an array of meticulously engineered camshaft grinds. For street car owners, milder profiles enhance everyday driving with smooth power delivery. For those pushing their M20 engines on the track or in rally stages, more aggressive cam profiles unlock faster throttle response and extend the engine’s power band.
Designed for durability and consistency, CAT Cams camshafts help your BMW M20 deliver peak performance at every RPM. Whether you're cruising through urban streets or tackling technical track sections, these camshafts ensure your engine responds with precision and power every time.
Built on a foundation of expertise, CAT Cams products are trusted by performance enthusiasts worldwide. Optimize your BMW M20 engine with a reliable, high-performance camshaft that brings out the best in your build.
Choosing the Right Cam for your Application:
| Duration @ 0.1mm | Valve Lift | Application |
| 279° Intake / 279° Exhaust | 11.05mm Intake / 11.05mm Exhaust | Sport |
| 291° Intake / 291° Exhaust | 11.55mm Intake / 11.55mm Exhaust | Sport |
| 270° Intake / 249° Exhaust | 10.85mm Intake / 9.90mm Exhaust | Turbo Conversion |
| 302° Intake / 302° Exhaust | 11.90mm Intake / 11.90mm Exhaust | Hot Street |
| 314° Intake / 314° Exhaust | 12.40mm Intake / 12.40mm Exhaust | Rally / Race |
| 322° Intake / 322° Exhaust | 12.40mm Intake / 12.40mm Exhaust | Full Race |
| 330° Intake / 330° Exhaust | 12.40mm Intake / 12.40mm Exhaust | Full Race |
| 334° Intake / 330° Exhaust | 12.40mm Intake / 12.40mm Exhaust | Full Race |
| 292° Intake / 270° Exhaust | 11.55mm Intake / 10.85mm Exhaust | Turbo Conversion |
For optimal performance and reliability, 5150 strongly advises replacing your valve springs with your camshafts, even with mild camshaft upgrades. This essential step acts as a preventive measure against potential piston-to-valve contact during instances of over-revving or mis-shifts. By taking this proactive approach, we prioritize your engine's well-being and ensure that you experience the highest levels of performance without compromising on reliability.
BMW M20B20 Applications:
BMW 3 Series
1977-1982 E21 320 / 326
1982-1994 E30 320i
BMW 5 Series
1977-1981 E12 520 / 526
1981-1987 E28 520i
BMW 7 Series
1981-1987 E23 720i
BMW M20B23 Applications:
BMW 3 Series
1977-1982 E21 323i
1982-1994 E30 323i
BMW M20B25 Applications:
BMW 3 Series
1985-1993 E30 325i / 325is / 325ix
BMW 5 Series
1987-1990 E34 525i
BMW M20B27 Applications:
BMW 3 Series
1982-1987 E30 325e / 325es [North America]
BMW 5 Series
1982-1987 E28 525e / 528e