Difference Between Pro Circuit and FMF

I don't think you will be able to tell much difference between your PC and the FMF woods pipe. I have run both and could not feel any difference. The FMF desert pipe I really like though since my speed in the woods has picked up alot. Add about 500rpm before the pipe hits for the desert pipe. A torque ring may bring that close to the woods pipe but I don't know since I haven't tried one.

If I recall Pro Circuit has made the Platinum pipe (rev) for some time and recently started making the Platinum II pipe (torque). I only have experience with the FMF -30 (rev or desert) pipe and the FMF -35 (torque or woods) pipe since I own both for my KDX200H1 ('95).

The -30 requires riding the bike more like a 125 motocrosser and has a definite 'hit' in the midrange when it starts to make power. It's a little light on the bottom end but makes great top end power. If you like riding hard and fast all of the time the -30 is for you. The torque ring with the -30 just drops the power band 200 to 300 RPMs but doesn't change its character at all. The -35 has a little better bottom end than the -30 and no 'hit'. The top end is a little softer but revs out close to the same as the -30. As a matter of fact the -35 will out rev the -30 if you're using the torque ring with the -30. I much prefer the -35 because while you can still rev the bike and ride it very aggressively, you can also slow down and enjoy your ride without worrying about falling off the power band or dealing with a 'hit' when you least expect it.

It's important to pay attention to jetting when you use these pipes because proper jetting will bring out the different character of these pipes and maximize their performance. I believe the -35 requires a leaner main jet than the -30 (if I'm remembering right), And they both need to be run leaner than the stock pipe.

Rhodester is on it for the FMF pipes! If you have the original Platinum pipe then you are closer to the 30 than the 35. I was using the Platinum II on my tests. If this is the case them you should definately try the 35 (Woods pipe) and you should notice a definate bottom end gain in the lower R's.

Check out the RB carb mod www.rb-designs.com/kdx200-220.htm I think they have what you want. It's all custom work done to your carb.They turn them around in about 3 days...so you could have it back within a week.

Did you do the gold valves yourself? Was it an easy operation?