Our X-Treme Heavy Duty Axles are upgraded from our Heavy-Duty Line to handle the harshest terrains for racing in Desert, Sand, Mud, Rock and Short Courses. Demon Powersports has developed a RACE READY, ULTIMATE PERFORMANCE axle that doesn't burn a hole in your pocket and adheres to the highest quality standards. The success behind our products stems from thorough quality control. Our products go through extensive and extreme testing before launching. Entire Axle Made Up of 4340 Chromoly Steel Material (In-and-Out); These axles are bigger, beefier, and stronger. Demon X-Treme Heavy Duty Axles are built using larger CV joints and shafts, paired with our proprietary dual heat treatment process, and 4340 Chromoly Steel material for all its components including the shaft, housing, cage, race, and balls. This gives the axles the edge it needs for superior strength and longevity. We re-engineered our cage design to enhance durability and use Molybdenum grease to lubricate the internal components. The axle's inner components are micro-polished, so the CVs don't heat up like other products. 4340 chromoly steel is more elastic meaning the axle shaft and its components will absorb any stress and keeps it within itself, eliminating any stress from being transferred into the differential and through your drivetrain. This helps preserve other components on the car. Our X-Treme Heavy Duty are tailored made to work with all major Long Travel Suspension Kits and Lift Kits. We understand the requirement for the desert and dunes. As provide an out of the box solution since they are already optimized for heat so your CVs can run cooler and last longer. Our long travel axles are tailor made to fit the following suspension kits Cognito Motorsports, Extreme Performance, Fireball Racing HCR, NXS Designs, Madigan Motorsports, SF Raceworks, LSK, Lone Star Racing, Fifty6 Industries, FabWerx, Grounder 4, UTV Wolfpack, Reflex, Long Travel Industries and much more; 2-Year Limited Warranty.