Post 1 by YAMRED, 22 Apr 2008, 09:37#1 Post missingThis post could not be recovered from the original forum.
Post 3 by weeksy, 22 Apr 2008, 10:26#3 Firstly, No. You can't The SD ones are made by SuperSprox. They have only been bought by 1 dealer in UK currently who's up in Fife. (according to Supersprox, no-one else has bought them) They only come in 42 rear. Which i purchased and will run with a 17 front. Which will give pretty much the same gearing as a 16/39 (close enough to the 16 40 you want.) they're £50 and will require a chain with 3 links more. I'll find the name of the dealer in a minute using search.