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Message: [QUOTE="jeredh, post: 1247453, member: 64361"] Update on my repairs. I bought a Wiseco piston/ring kit for my 2003 KX250. Note: i bought the Wiseco piston that is designed for a electrofused cylinder. The piston replacement was very easy on this bike. From start to finish it went without a hitch. Removed seat, gas tank, plastics and radiators. Pulled the cylinder jug off and it looked really good. Minimal signs of burn below the rings on the factory piston, and zero signs of nicks/scratches/gouges on the cylinder walls (in fact, the cross hatching from the factory was extremely visible). The piston removes quite easily: removing the two clips on the piston barrel was a cinch, and the piston slid right off the crank. Installing the new Wiseco took 10 minutes. Putting the new gaskets on and the cylinder jug, along with reassembling the power valve took 20 minutes. The radiators gave me now problems...all hoses were in good shape. The entire project took about 4 hours of labor. I feel very confident with the work b/c i did it myself. The good news is that the bike started on the 2nd kick, and sounds great. The bad news is that the Pro Circuit Works exhaust and Pro Circuit Nature Friendly exhaust system were no where close to matching up to the factory mounting holes. More on this in another thread. Going to Loretta Lynn's this weekend. First i will break the piston in on Saturday with casual riding. [/QUOTE]