Overview Reviews Product Description Specifications Valve Spring 1200 Series Drag Race Dual Spring 629 lb/in Spring Rate 1.100 in Coil Bind 1.625 in OD Set of 16 Product Videos Custom Field Product Reviews Write a Review Write a Review × PAC RACING SPRINGS PAC RACING SPRINGS 1.625 Dual Valve Springs (16) PACPAC-1224-16 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *