Upgraded Valve springs for all M57 engines

42.6% stiffer than original valve springs.

8% thicker springs

Solving valve float issues with high EMP

For stock camshafts only

Can be fitted without removing the cylinder head

EMP (exhaust manifold pressure) is what causes the valves to float which can damage your valves and pistons and other parts of your engine. It is recommended that you upgrade your valve springs when running over 400hp and high amounts of boost.

These valve springs are rated  for around 5.5 bar of boost, EMP is typically 100% higher than your boost and this is what causes your valves to open when they shouldn't be open.

Highly recommended to get a mechanic to fit these for you. Fitting then yourself you do so at your own risk. its recommended to change the valve stem seals at the same time as the upgraded springs.

I also sell injector copper washer seals which are single use only and you will need to change them when you disassemble your head. i do also supply O-rings for the injectors too so please see my other items

THESE WILL FIT FOLLOWING VEHICLES