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Yamaha MX & Off-Road Dirt Bikes
Tuning Help: 1997 yz250 w/pro-circuit platinum pipe
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[QUOTE="oldfrt613, post: 937180, member: 62011"] Check FMF or Boyeson web sites for a starting point, or just call Pro Circuit. You didn't indicate if you had a fresh top end or if you have ever replaced your crank seals. Make sure your motor is in good shape or no mater what pipe you use, you'll be disapointed. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Tuning Help: 1997 yz250 w/pro-circuit platinum pipe
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