After years of success with our beehive valve spring kit, we noticed that not everyone needs a high pressure, high RPM capable beehive valve spring. GSC Power-Division now offers a cylindrical, round wire spring kit with Titanium retainer for the 2JZ platform. This is a great spring kit for the daily driver with an S1 or S2 cam profile that keeps the revs and boost below 32PSI and 8500 RPM. These round wire springs still have the same high quality attention to detail as our popular beehive kits. The AS50 material is Nano Peened and batched according to seat pressure within our specs. The lightweight titanium retainers are CNC machined with tolerances and repeatability that are unmatched by other brands. This keeps a consistent seat pressure across the head for ultimate reliability and performance. Sold in a set of 24 5744 Single Spring 80LBS @ 1.320" 192LBS @ .400” Max Boost: 32 PSI Max RPM: 8500 (using an S1 or S2 profile cam)