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Panic revs!!
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<blockquote data-quote="Nighthawk016" data-source="post: 12710" data-attributes="member: 334"><p>When you give a 4t a huge carb/throttle body, and open the exhaust it shifts the torque curve toward the upper RPM. </p><p></p><p>Why do you guys think people are doing exhaust mods and changing the carbs on XR's? to get more power out of the bike, 96 and later XR250's had 30mm carbs the new 250's have 37 or 39(i think) and the '11 kx250f has a 43mm throttle body. (XR400's had a 36mm, YZ400f had a 39mm) XR250's were also rated at 88 or 89dB... just a little info for you guys</p><p></p><p>James: RT100(2t) XR250(4t) RM250(2t)</p></blockquote><p></p>
[QUOTE="Nighthawk016, post: 12710, member: 334"] When you give a 4t a huge carb/throttle body, and open the exhaust it shifts the torque curve toward the upper RPM. Why do you guys think people are doing exhaust mods and changing the carbs on XR's? to get more power out of the bike, 96 and later XR250's had 30mm carbs the new 250's have 37 or 39(i think) and the '11 kx250f has a 43mm throttle body. (XR400's had a 36mm, YZ400f had a 39mm) XR250's were also rated at 88 or 89dB... just a little info for you guys James: RT100(2t) XR250(4t) RM250(2t) [/QUOTE]
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