Nitro Gear and Axle direct-fit axle shafts are offered in 1541H steel or 4340 alloy (chromium and molybdenum—a. k. a. chromoly). Steel axles are heat-treated carbon steel with 41 percent or less impurities. They provide tensile strength of 181,000 psi, which equals up to 35 percent increase in strength overstock. Chromoly axles are a lower carbon steel with a minimum 10 percent chromium and tensile strength of 228,000 psi. Both axles take more punishment to get you further down the trail—or off it entirely. Make your vehicle "Nitro Tough" with the Nitro Gear and Axle direct-fit axle shaft(s) designed for your specific application.
* CNC precision machining and heat-treating processes ensure excellent fitment and overall strength
* Heat treatment applied after splines are cut, allowing for deeper penetration where strength is needed