I have a 200s three wheeler that i am converting into a racer kinda like the x model and was wondering what would you do keep the chain guard on or off.

I ride in some sand and maybe a few inches of water but try to stay out of the mud and water as much as possible.

 

If you can deal with the looks of the chain guard...I would leave it... It is extra security if something bad happens, like a thrown chain. A chain can crack the back of the case real quick.