Yukon Gear’s alloy steel axle shafts feature rolled splines instead of weaker cut splines, which makes them a perfect upgrade from factory and most aftermarket shafts that wear out as much as 30 percent faster – and they’re actually cheaper than most replacement axle shafts. Yukon Gear was founded in Washington state – where extreme weather and off-roading are commonplace – and manufactures performance products that were built to perform and built to last in harsh environments.