How about it, best pipe for 2001 wr426f

Guys, I'm running an White Bros R4 pipe on my bike. It seems decent but would like more hit through mid and upper RPMs. What do you guys ride with. There are no sound restrictions here in utah so sound DBs are a non issue hear.

Guys, I'm running an White Bros R4 pipe on my bike. It seems decent but would like more hit through mid and upper RPMs. What do you guys ride with. There are no sound restrictions here in utah so sound DBs are a non issue hear.

I have tested the Big Gun system, OEM YZ pipe and the Power Core IV on my WR400f. I now have a FMF quiet Core but have not tested yet. Most top end from the FMF, (also the loudest.) Best bang for the buck, the stock YZ silencer.

fershy

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