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. - KTM 125 EXC (1998, 1999); KTM 250 EXC (1998, 1999); KTM 300 EXC (1998, 1999); KTM 380 EGS (1998, 1999); KTM 380 EXC (1998, 1999); KTM 380 MXC (1998, 1999); KTM 200 EXC (1999, 1998); KTM 125 MXC (1999, 1998); KTM 250 MXC (1998, 1999); KTM 360 EGS (1996, 1997); KTM 360 EXC (1997, 1996); KTM 360 MXC (1996, 1997); KTM 360 SX (1997, 1996); KTM 200 MXC (1998, 1999); KTM 300 MXC (1998, 1999)