Motorcycle Suspension Springs Anderson Quality Spring is a supplier to the motorcycle suspension industry. We stock only the highest quality, high tensile, suspension grade chrome silicon wires for use in the manufacture of these springs. Because we stock a large number of sizes of this type of wire, ranging from ø0.125" to ø0.531"(ø3.2 mm to ø3.5 mm) diameter, we can respond to most orders quickly, whether they be large or small. These springs can be heat-treated, shot peened, and pre-set, in house, and then powder coated and labeled to meet your requirements. Your parts can be 100% load tested to assure the accuracy of the springs performance in the most demanding applications.