Dana Holding Corporation has released Spicer high-performance chromoly axle shafts, optimized for use with larger tires. The new Spicer chromoly axle shafts are manufactured using SAE-4340 nickel chromoly steel for maximum strength and durability and are heat-treated to ensure optimal hardness throughout. The nickel provides additional toughness, while the chromium ensures high-temperature strength and resistance to abrasion. Dana also adds molybdenum to maintain a specified hardenability. Heat treatment processes developed for the Spicer chromoly axle shafts are designed to increase core hardness to precise levels, while at the same time optimizing case and surface hardness, to achieve maximum impact strength and durability. (800-621-8084/ www.danaunleashed.com)