2-inch seamless extruded tube. 46mm digressive piston. Self-adjusting, deflective-disc independent rebound and compression. 18mm centerless-ground, case-hardened, chromed, and super-polished rod. 46mm monotube design ensures consistent, fade-free performance in all conditions. Digressive valving instantly reacts to changing surface conditions. Zinc plated for resistance against harsh elements. Grooved Body for ride height adjustability. Durable silent block rubber bushings. 3-year Manufacturer’s Warranty.