hmmmmm nyroc what is the muffler modification you have done to your prairie 650, what other mods do you have and what is the top speed of your prairie, and one more for ya what ply are the sur- traks you are running on your machine, thanks

lance

 

Lance,
Where do you usually ride? I am in Lex, but from C-ville. We were just curious if there were any legal places near springfield?
James

 

not that i can think of, the nearest one i can think of is in livingston


c-ya later lance

 

lance
If you haven't yet, you may want to look into BigRock www.bigrockatvpark.com in Maysville, or Mountain Parkway off road in clay city www.mpoffroad.com.

 

Hey KY Riders....check out sekytrailriders.com for places to ride in So KY...Live 20 Minutes from Livingston (Cromer's Ridge as the locals call it) but really don't like it...TOOOOO crowded for me

 

Springboy,
-I took the packing out of the tip of the muffler and put 6 3/8" holes through each baffle. See this.

-K&N filter
-Airbox snorkle enlarged (see pic 19). You can do a cleaner job than I did, since diamondgracing has a nice one they developed for the 650.
-Dynojet

My 650 does 63 (on a flat) with 26" tires, so it is probably 66mph. It once did 64 with stock tires.

The real power gains have all come at low and mid rpms.

I am still investigating whether I am jetted rich (or lean) at high RPM's and could go faster. It really runs well.

The Sur Traks are 2 ply. They weigh 21 lbs ea, so they don't rob power. they are 100% better than dunflops in every way, IMO. The mudrunners on the front are the lightest 26" front tire I could find. They are 22lbs. They are extremely good together. Very good diamter match, too. I can't hear the 4x4 engage, since the front and rear tires roll the same distance per rev.

 

I drill 3 1 inch holes in my and it is not loud. Sounds good like a Ducati. I also removed the cone inside the muffler. I had to readjust my idle, gained midrange and highend power.