These springs feature wide coil yet strong and consistent clamping forces to be achieved throughout your valve train. Evo engines tend to suffer valve float at a variety of specifications, these springs will eradicate that condition in 95% of engines. For the 5% exception, ND also offer valve spring shims to further tune the “seat” and “over the nose” pressure required.

This wide coil allows spring valve lifts as high as 14mm to be utilised without the fear of damaging coil bind.