Quad Boss Front Differential Roller Sprague Kit Polaris The Roller Sprague Kits from Quad Boss present an exceptional replacement for the factory ASM roll cage. These kits are crafted with longevity in mind, showcasing outstanding durability that rises above the majority of aftermarket sprague-style replacements. Employing 7075 aluminum bearing cages, this product offers an extended lifespan compared to 6061 aluminum upgraded replacements and all plastic OEM cages. The product also boasts effortless installation, courtesy of a handy plastic sleeve that secures the rollers in place, making the installation process a breeze. Fitment: Also fits RZR XP 4 1000 20 15-22using ASM roll cage OE Part # 3235487 Also fits Ranger XP 1000 / Crew (all models) 20 17-22using ASM roll cage OE Part # 3235487 Other machines using OE Part # 33235625, 3235844, 3235917 require Quad Boss Part # 403180 / 100-1121-T Features: Upgraded 7075 aluminum bearing cage Greater longevity and increased strength over aftermarket 6061 aluminum alternatives Superior to plastic bearing cages used by OEMs Fully assembled with a plastic retainer sleeve holding the rollers together for easy installation Hard-coated aluminum bearing cage for strength and durability Replaces plastic OE ASM roll cage Replaces OE Part # OEM 3235487