14/40 is a great set up. Also you may want to try 13/38 set up. A 14/38 is basically the same as stock, I have a 14/38 setup thinking I would get a higher top speed, not true, i ended up with same top speed as stock. Im going to try the 13/38 set up and see what my top speed is. So far I really like the 14/40 setup, it has given the highest top speed. Ill post how the 13/38 works out. Peace.