− Decrease quantity for Valve Springs, Dual, 1.550 in. Outside Diameter, 551 lbs./in. Rate, 1.160 in. Coil Bind Height, Set of 16 Quantity + Increase quantity for Valve Springs, Dual, 1.550 in. Outside Diameter, 551 lbs./in. Rate, 1.160 in. Coil Bind Height, Set of 16 Add to cart