Overview Reviews Product Description Valve Spring - 1300 Series Circle Track - Dual Spring - 436 lb/in Spring Rate - 1.175 in Coil Bind - 1.374 in OD - Set of 16 Product Videos Custom Field Product Reviews Write a Review Write a Review × PAC 1.374 Dual Valve Springs (16) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *