Set of 2 Sealed Bearings Direct OEM Replacement for Koyo Bearings, Brand New Premium Quality - See Model Listing/Fitment in Description, Proud to be a Veteran Owned Small business. Let us know if we can help you. This is a set of two, double roller type wheel bearing. The bearings are internally sealed to keep out moisture and dirt. The bearings fit the following models and part numbers. Yamaha Part numbers: 93305-00602 / 93305-00602-00 / 93305-00601 / 93305-00601-00 Models: 2003-2008 Grizzly 660 (Front and Rear), 2008-Up Grizzly 700 (Front and Rear), 2009-2014 Grizzly 550 (Front and Rear), 2016-Up Kodiak 700 (Front and Rear), 2018-Up Kodiak 450 (Front and Rear), 2017-2018 YXZ 1000 (Front and Rear), Pro Tip: To check your wheel bearings, jack up the wheel and grab the top and bottom with your hands and pull back and forth. If there is alot of slack, the bearings are bad. Another Tell-Tale sign is popping or grinding coming from the wheel hubs. Installation Pro Tip:The night before you will install the bearings, put them in the freezer. Also, coat the outside of the bearing and hub with a light coat of grease. The freezing will shrink the bearings slightly and the grease will make the install and pressing the bearings in much easier. We are glad to help any way we can. Let us know if you have any questions. Thank you!