Coffman HILL KILLER Polaris RZR RS1/Turbo S/Pro XP/Turbo R/Pro S Differential

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FOR THE EXTREME RIDERS THAT NEED THE BEST DIFF OPTION ON THE MARKET Get the new GEN II HKD. Developed, tested, and proven to be the strongest Diff we ever heard of. This is a brand new differential that we have built to withstand the thrashing of extreme off roading. 1. We disassemble the stock differential. 2. Then we machine an interference fit sleeve on our ring gears. We press them on and fuse weld for piece of mind. With the added wall thickness of the ring gear, we had to develop a new billet aluminum spring retainer, 4wd armature, and sprague a plate. Our 4wd arm plate is 25% thicker to increase magnetic holding power and less likely to bend or fail. Our sprague plate is billet steel and a whole lot stronger than factory. 3. One key component in increasing strength and longevity is the addition of roller bearings and oil passages to our drive hubs. 4. The Hill Killer diff comes with our billet aluminum sprague cage. Every differential we build is bench tested to ensure proper function before they ship. Will not fit 2017+highlifter or rock and trail Add a bracket for $425. Show more