Beskrivelse

High quality race spring kit that we use on all our 2jz build with stock good quality steel retainer.

-10 000 rpm peak

-13,2mm lift peak

Spring  seat pressure on these springs is @106lbs, in comparisation brian crower singel springs have seat pressure @80lbs and brian crower double springs have 102lbs.  So these springs are even stiffer than double springs from other brands like ferrea that costs 700 usd.