Upgraded valve springs for the BMW M57, designed and manufactured in Europe available in 2 flavors. These are not simply OEM springs from another application that have been repackaged.
An in house 3D printed valve spring compressor is included with the spring set for easy install. The tool is now printed on a Formlabs Form 3L printer in the Formlabs Tough 2000 resin.
Stock seat pressure is 34lb and 55lbs open.
Stage one spring set is 56lb seat and 90lbs open, safe to 70psi boost and 78psi EMP.
Stage two spring set is 72lbs seat and 123lbs open. safe to 88psi boost and 103psi EMP.
