Originally Posted by
Canker
$$$$$ or Cheap?
Cheap way. Get a generic roadlink off ebay for $3 and a Sunrace 11-40 8 8 speed cassette for $35 and yes they do make those. If your RD can't handle the 11-40 with the roadlink pick up a really cheap 7/8/9 speed mountain bike RD.
+1. This is the cheapest way to get significantly lower gearing.