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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Xr250r
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[QUOTE="Jonala, post: 102225, member: 19928"] Bowhunter, I have a 2001 XR250R. dB levels are , Stock 82 @ idle, 92 @ 1/8 throttle Small outlet pipe cutout, but with spark arrestor 92@ idle, 102 @ 1/8 throttle. I would recommend, drilling 4, 1/4 holes around the small outlet pipe. It's cheap and allows the motor to breathe much better, while still being very quiet. I have only changed the main jet = 140. The bike runs great! You may want to look into a hot start kit. These little bikes can be a pain to restart when they are hot and you need to get going.:p [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Xr250r
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