Exhaust and tire question for 06 yz250f

Anyone running a white brothers mx4 slip on? I picked one up on ebay for 75 dollars. Did it add any type of power gains and did you have to change your jetting. Also what is the best tire out on the market right now for woods riding and sometimes Mx.

Can someone please help me out.

I do not know anything about the white brothers mx4, but any time you change from the stock exhaust you will need to rejet to see the benefits of the aftermarket.

The best tire I have found is the Michelin M12. Great traction and last me a year.

you need to run it first with it on and see how it runs. Sometimes with a slip on you need to go up on the main just a little bit.

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