NICHE CV Axle Part Number: MK1001444 Includes: (4) CV Axle Assemblies This Part is known to be Compatible with the following vehicles: Polaris Sportsman 450: 2006 Polaris Sportsman 500 HO: 2006-2010 Polaris Sportsman 700 EFI Twin: 2006 Polaris Sportsman 700 Twin: 2006 Polaris Sportsman 800 Twin: 2006 Polaris Sportsman Touring 800: 2008-2009 Polaris Sportsman X2 500: 2009 Polaris Sportsman X2 800: 2009 NICHE Axles bring a perfect combination of performance and value when compared to original factory axles. They are built to more rigid standards than original equipment and provide increased durability. Shafts and joints are forged from light-weight heavy duty 4340 Chromoly then receive induction and quench heat treatment for superior hardness. Although we have added improved boots and ultra-low profile boot clamps all remaining components are 100% interchangeable with stock which makes servicing a breeze in the event you tear a boot and need to get a quick replacement.