I had a guy ask me about why I used a 51mm piston and cylinder combination and figured I would let you all know the answer...it was sitting here brand new so that's what I decided to use. Remember, the dragon strokers are short rods, so you use the short rod type pistons.
Now, what mods can be made on the cheap? I would run a 54mm piston and matching cylinder, of which, you can buy without having to modify the skirts. Also, the cases are bored to accept a 54mm cylinder already.
http://www.hondatrailbikes.com/catal...roducts_id=787
That is the piston you need. You can get the cylinder just about anywhere. I like these guys:
http://www.dratv.com/54mm95ccalloy.html
This will make 119cc. Now...really hold on!