Just the other day i was out riding my 350x and it started making a popping noise in the back end, i took it in the shop and checked my engine mounting bolts and a couple were loose so i tightened that and my swing arm bolt and it stopped for a little while. Well i got out riding today and it started the same crap again only this time it was worse, i checked my mounting bolts again and found two bolts missing from the rear hanger plate that holds it on the frame, is this whats making my bad popping noise? I'm totally stumped on this one cuz i can't find anything else that it could be, oh yeah my rear bearings are pretty well worn too but i don't think that would cause all that popping. Any ideas?

 

Check your:
Rear hubs
rear tire lug nuts
Swingarm bushings
Get them axle bearings fixed pretty soon, if they come apart in there you will wish you did it sooner, and when you do PACK them with greese, even if they are the sealed type, pop out the plasctic ring, and pack them full, THEY come with a very little amount of greese in them and they will go bad Quick!

 

check your chain. you may have to much slack in the chain and it is probably jumping teeth