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Old 07-14-2007, 08:19 AM   #5 (permalink)
huck
1st Gear Member
 
Join Date: Jun 2007
Location: Marysville Wa 98270
Posts: 106
Re: white bros R4 , 04 crf150f

I change those jets with stock exhuast and it works great. I think you can go even bigger. Its easy, cheap and dont worry. You should not have to change anything else.
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