Black Rhino Performance now offers a replacement billet aluminum front differential sprague for the 2015 Polaris RZR XP1000 2 and 4 seaters. Machined from 7075 Air Craft Aluminum, these precision built sprague’s replace the factory plastic Polaris sprague’s and use the small h-clips that came with the factory assembly. Designed to use your existing stock rollers and h-clips from the factory sprague. Each sprague has been CryoHeat treated unlike similar models out there on the market now. So adding 25% or more strength to the already strong billet aluminum means better efficiency and less wear. Because these are a top selling product, we often run out of stock.