Let's see, bottom end bearing are about $18, and the seals are about another $18. So that would be your parts list. If you have or pick up a Honda service manual for you bike, it should (might) show you how to split the lower end and how to replace those bearings. Otherwise, you could just take your whole motor out of your bike and bring it to a local shop for servicing. My rough guess would be about $125 (US) to have the parts and labor done for just the lower end bearings, if you already have your top end taken off. If you opt to bring it into a dealer, or other small engine shop, I would suggest, do as much work as you can to help save on labor prices. So take the top end off and unbolt the motor from your frame, and just bring them nothing but the bottom end. Good luck.