I have a stock 87 TRX250R and recently had "professional" work done on it (NOT). So Clean Genes needed to bore the piston chamber 3 times to "fix" that lovely eggshaped honing job that I paid $650 for.

So now I have a 3x bored chamber with a larger piston, but still have a stock pipe. I'm being told that I need to open up the air the engine gets with a pipe and there are SO MANY to choose from so the question is... what pipe to purchase?

I'm here to see what others have or are using and which ones to avoid. I don't intend on doing much more to this bike. Any suggestions would be appreciated!