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Rather than sounding like the supercar killer it is
By doubling the thickness of the OEM core and increasing the frontal surface area by 151% you gain an extraordinary amount of added cooling
Cooler air entering the engine improves combustion efficiency and power output
KW automotive
sound and fitment
GSC Power-Division Conical Valve Springs with Ti Retainers for Nissan GTR R35 VR38DETT monoblock Rather than sounding like theGSC Power Division Conical Valve Springs with Ti Retainers for Nissan GTR R35 VR38DETT Part # GSC 5068 GSC Conical Valve Springs with Ti Retainers for Nissan GTR R35 VR38DETT Setup Coil Bind (in) Install Height (in) Seat Pressure (lbs) Open Pressure, 11. 30mm lift Maximum Valve Lift (in) Conical 0. 807 1. 324 1. 306 82 88 229 lbs @ 0. 879" 235 lbs @ 0. 861" 0. 453 Max RPM: 9,000 RPM Max boost: 40 psi 1,500 HP Ths GSC Power Division Conical Valve