RB25DET NVCS Valve Springs. High performance Nissan RB25 valve springs with Titanium retainers._x000D_\nIncludes 24 springs, 24 retainers and 12 spring bases for the exhaust side to even up the install heights._x000D_\nIntake: 83lb seat pressure at 30.40mm installed height._x000D_\nExhaust: 80lb seat pressure at 30.65mm installed height._x000D_\n10.50mm maximum lift.
