TECH: Chain Conversion for Sportster

What's the offset on the 21t sprocket? I got the spacer but unsure of sprocket to get

I don't remember. I got it on eBay. It was cool because they actually had a PBI 520 sprocket in 21T that fit a sportster. I do remember it having 'about' a 1/2" offset in the center so it could be put one way close to the shaft or flipped out closer to the outside. I had the sprocket face closest to the Mainshaft and used the factory 4-speed spacer that I outlined in the parts list at the beginning.

What seat is that? And can you ride a passenger with it? Thanks.

Biltwell. Could ride a passenger if you had hidden braces or kept the fender struts. It would be pretty cozy though.

damn....that bike is as mean as Mr T. pitty'ing fools. awesome write up! may do this myself next winter.