I have a 09 KLX250S with a Kustom Kraft big bore kit, a FMF header and exhaust. It has 1350 miles on it. The big bore has been on there for 300 miles. This kit made the bike what I wanted. Able to climb steel hills in second without down shifting or even reving up. I had the pipe kit and jetting done at Thin Air Motorsports in Truckee CA.
This is my second bike and I want some of the money back. I paid $5400 for the bike, and $2000+ for the mods. I am willing to sell it for $5000. The bike is red.
If anyone has questions about the 331 kit I would gladly answer them too.

 

Good Luck W/ Your Sell