Where would be the best place to buy new bearings and seals for my 86 250 trail boss? Thanks

 

did you go to a parts store to see if they can match or cross the number on the bearing? maybe ebay as well.

 

allballsbearings has some good kits. the seals are hard to match up. ive tried without any success. the bearings are just 6206 bearings. can buy them at fastenal for a little over 5 bucks a peice. one of them has to have a chamfered edge put on it (nothing a die grinder and a steady hand cant hanlde). i have those bearings in my 250 motor now. never had a problem out of em.