NICHE CV Axle Part Number: MK1000994 Includes: Front Left CV Axle Assembly Front Right CV Axle Assembly This Part is known to be Compatible with the following vehicles: Yamaha Grizzly 660 YFM660F 4x4 Limited Edition: 2003 Yamaha Grizzly 660 YFM660F 4x4: 2003-2004 Yamaha Grizzly 660 YFM660FA 4x4: 2005-2008 Yamaha Grizzly 660 YFM660FAH 4x4 Hardwoods Hunter Edition: 2006 Yamaha Grizzly 660 YFM660FAH 4x4 Hunter Edition: 2005 Yamaha Grizzly 660 YFM660FAH 4x4 Outdoorsman Edition: 2006 Yamaha Grizzly 660 YFM660FAHD 4x4 Ducks Unlimited Edition: 2006 Yamaha Grizzly 660 YFM660FAHW 4x4 Wetlands Hunter Edition: 2005 Yamaha Grizzly 660 YFM660FASE 4x4 Special Edition: 2005-2006 Yamaha Grizzly 660 YFM660FG 4x4: 2007-2008 Yamaha Grizzly 660 YFM660FGH 4x4 Hunter Edition: 2007-2008 Yamaha Grizzly 660 YFM660FH 4x4 Hardwoods Hunter Edition: 2003-2004 Yamaha Grizzly 660 YFM660FHW 4x4 Wetlands Hunter Edition: 2003-2004 Yamaha Grizzly 660 YFM660FLE 4x4 Limited Edition: 2004 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