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Dirt Bike Mods & Maintenance
Expert opinions on AMA 144 rule?
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[QUOTE="Masterphil, post: 988200, member: 55234"] Eric's 144 kit would sacrafice no reliability, unless you get it ported for mid-top. I have the same bike as you. My last bike was an 02 yz426f, and this little 125 just amazes me with how much power it makes. Running race fuel and jetting it a little sharper really gives some gains. I'm not sure what conditions you ride in, but I started with a baseline jetting of 45 pilot, 1469G needle on second clip, and a 192 main. That got me much better response and feel than the stock needle and main, I'm still a little rich and could probably go to a 188 main and still be safe. Have you adjusted your powervalve like this, it makes the power come on much more smoothly. FYI, KTM riders Langston and Metcalfe use this setting for the powervalve on their bikes. The adjustment that I am referring to is at the bottom of the page: [url="http://www.transworldmotocross.com/mx/how_to/article/0,13190,610643,00.html"]http://www.transworldmotocross.com/mx/how_to/article/0,13190,610643,00.html[/url] Having said all of that, I think I'll probably be having Eric bore mine out to 144 and port for mo-better and race fuel sometime in the future. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Expert opinions on AMA 144 rule?
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