I thought I'd share this with you because for a minute I was baffled . Saturday I went over to my daughter and almost son-in-law to clean their air conditioner so it would be ready when they needed it . I have a small tool kit with different size bits and small hex drive sockets that I strapped the my back rest . On the way over every time I'd hit a bump I'd here a clunk and it sounded like it was coming from my front end , now I told my self that sound wasn't here yesterday so I was listening very close and kept hearing it . I have V&H big radius so it's not quiet by any means so I got up to speed and pulled in the cluth and coasted and sure enough i could then hear the tool kit clunking but before I sure thought it was coming from the front end .