Demon Polaris Turbo R Xtreme Heavy Duty Axle Race Spec 300MFront and Rear Axles Entire Axle made up of 4340 Chromoly Steel Available in 300M shaft for select fitment Re Engineered Cage Design to Enhance Durability 20 30% Larger components compare to HD All components of axles dual heat treated to increase strength Unique boot design depending on riding terrain for heat reduction High quality lithium based grease containing molybdenum with high drop point Larger swing angles up to 47 degrees Backed with a 2