Overview Reviews Product Description Valve Spring - Dual Spring / Damper - 363 lb/in Spring Rate - 1.000 in Coil Bind - 1.440 in OD - Set of 16 Product Videos Custom Field Product Reviews Write a Review Write a Review × LUNATI 1.440in Valve Springs Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *