Bearing is packed with heavy duty premium marine grease and with the addition of special complex thickeners which allows it to be virtually waterproof Nitrile butadiene rubber double-lip oil seals help prevent abrasives, corrosive moisture and other harmful contaminants from entering bearings To further help keep any moisture out, we have gone from 30% grease filling to a 60% for harsh conditions The special v-groove on the inner race is better for resistance to water intrusion Provides unsurpassed rust and corrosion protection Factory-Links ball bearings are specially designed for Off-Road use. - Honda TRX650FGA Rincon GPScape DT (2004, 2005); Honda TRX680FA Rincon 4x4 (2006, 2009, 2010, 2014, 2016, 2018, 2015, 2019, 2023, 2007, 2008, 2012, 2017, 2011, 2013, 2020, 2021, 2022); Honda TRX680FGA Rincon 4x4 GPScape (2010, 2006, 2008, 2007, 2009); Honda TRX650FA Rincon 4x4 (2003, 2004, 2005)