I had a friend of mine who operated a machine shop get me a -6 tooth rear pulley for my classic from allamericanwheel.com. Now, they are blanks you buy in whatever tooth and width you want. Then you will have to take it to a machine shop and have it machined to your bolt pattern and such. It also took a spacer between the new pulley and wheel about 3/32 if I remember right. Very high quality product and have no problems with it and it has a very nice polished finish. Over 10,000 miles on it so far. With the -6 I was able to still use the stock belt but had to elongate the adjustment hole in the swing arm slightly. (maybe 1/8 inch, did it with a burr tip in my die grinder) It was still cheaper than buying the rear pulley from SW.