NICHE CV Axle Part Number: MK1000993 Includes: Rear Left CV Axle Assembly Rear Right CV Axle Assembly This Part is known to be Compatible with the following vehicles: Yamaha Grizzly 660 4X4: 2003-2008 Yamaha Grizzly 660 Ducks Unlimited Edition 4X4: 2006 Yamaha Grizzly 660 Hunter Edition 4X4: 2003-2008 Yamaha Grizzly 660 Limited Edition 4X4: 2003-2004 Yamaha Grizzly 660 Outdoorsman Edition 4X4: 2006 Yamaha Grizzly 660 Special Edition 4X4: 2005-2006 Yamaha Grizzly 660 Wetlands Hunter Edition 4X4: 2003-2005 High-Strength Grizzly Axles are constructed of over-sized chemically tested 4340 Chromoly shafts that include over-sized tempered steel joints & ultra durable UV resistant boots. Our Joints are 25 percent larger then OEM joints. You heard right! Our CV joints bearings and components are all 25 percent larger then OEM. The same goes for our shafts which are also a full 25 percent larger than OEM (see pictures which show the difference). With the increase in strength you are not loosing any articulation angle. Our axles will work just fine with up to a 2 inch suspension lift. These are the last axles you will ever buy for your machine! Why don t other companies who advertise heavy-duty axles show you pictures of there product next to OEM axles? The answer is simple their axles aren t heavy duty at all! Don t waste your time putting on axles that are inferior in performance and in price!