GSC P-D 2021+ BMW M3/M4 S58 S2 Cams 278/274 Billet w/Intake Trigger (Use w/Upgraded Turbo)

GSC Power Division is well-known for making serious engine components for performance applications. For your 2021 and newer BMW M3 or M4 equipped with the S58 engine, these S2 camshafts are a significant upgrade, especially when you're running larger, upgraded turbochargers. They are designed to help your engine breathe better at higher RPMs, which is crucial when you've pushed past the limits of the stock turbo setup.

These camshafts are made from solid billet material, meaning they start as a blank piece of steel and are precisely machined to their final shape. This construction method is strong and allows for very specific profiles. The S2 profile features a duration of 278 degrees on the intake side and 274 degrees on the exhaust side. This increased duration means the valves stay open longer, allowing more air and fuel mixture into the cylinders and more exhaust gases out. They also include an intake trigger, which is important for the engine's computer to accurately track camshaft position, especially with the updated sensor requirements on these newer BMWs. Keep in mind these are intended for use with upgraded turbochargers; installing them with stock turbos may not yield the desired results and could even cause issues.

Because these camshafts are designed for high-performance, modified engines, it's important to ensure your entire valvetrain and fueling system can support the increased airflow. This is not a simple bolt-on part; it requires careful installation and tuning by a qualified professional to get the most out of them and ensure engine longevity. Please note that these camshafts are not CARB approved and cannot be shipped to California.