Upgraded valve springs are an absolute must have for any BMW M57 making higher than factory power output. With the perfect combination of increased seat pressure and ideal spring rate, these springs will ensure your valves seat properly and the valve train is not overloaded at max lift from excessive / incorrect spring rates. We have undergone long term testing with these springs since 2016, and have ran them at over 800whp with boost pressures exceeding 75psi.
What sets these springs apart from the competitors is that they are the only M57 springs available that are engineered specifically for high powered M57 requirements. All others springs available are simply OEM springs from various applications that happen to fit physically, although are nowhere near ideal in terms of seat pressure and spring rate.
Included with each set of springs is one of our valve spring install tools designed specifically for the M57 configuration. This tool allow for all 4 valve springs per cylinder to be compressed and replaced at one time. Install times are a fraction of what they are when using other generic valve spring compressor tools. Typical spring replacement time is 1-2 hours once valve cover & cams are removed and springs are accessible.