SS conversion kit for Mavic SL hub?
 

Any suggestions / links?

I don’t know much about this stuff.

Thanks

11x 3mm spacer and a ss-sprocket.

Cannibalize a couple old cassettes, file off the rivets that hold the cogs together, and you get free spacers. Buy a $5 BMX cog and your set. A lbs would probably give you a bunch of worn out cassettes if you ask them nicely.

Or if you want to spend money: http://jensonusa.com/store/product/C...rsion+Kit.aspx

I keep wondering, what kind of bike shop keeps worn out cassettes?

My bike shop keeps them in the trash can. They probably change 20 or 30 out a week.