− Decrease quantity for Valve Springs, Single, 1.390 in. Outside Diameter, 485 lbs./in. Rate, 1.165 in. Coil Bind Height, Set of 16 Quantity + Increase quantity for Valve Springs, Single, 1.390 in. Outside Diameter, 485 lbs./in. Rate, 1.165 in. Coil Bind Height, Set of 16 Add to cart