NISSAN RB25DE-DET (with NVCS). High performance Valve Spring and Titanium Retainer Kit. Additional Information
Includes 24 springs, 24 Retainers and 12 spring bases for the exhaust side to even up the install heights. 83lb at 30.40mm installed height on intake, 80lb at 30.65mm on the exhaust. 10.50mm maximum lift