Upgraded valve spring kit (dual with titanium retainers)

This kit upgrades NSX standard valve train of dual intake single exhaust spring to a full dual spring layout.
It further more improves the retainers by using billet titanium instead of powder metal.

Ideal for high rpm engine, and forced induction applications.

Spring rate:
5.21 kg per mm

Coil blind threshold:
20.7mm

Maximum lift limit:
15.7mm

Installed seat pressure:
30.39 kg @ 36.40mm (optionally 36.29kg)