Renegade Racing Components Valve Spring Set Dual Spring. Set of 16, Never Used. 273 lbs/in. Open Load: 310 lbs @ 1.200". Seat Pressure: 123 lbs @1.800".
PSI Dual Valve Spring 1.450 dia K-800 CT-1225 Sold Each - 1 Dual Spring
Supertech Spring Seat Locator For Honda RSX / S2000 Dual Spring H1020 Series
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Throttle Return Spring Dual Spring w/Bracket Steel FiTech 4-BBL Throttle Body