[85-86 250r] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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85-86 250r
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Posted by: odog

i have a friend that has an 86 250r he is wondering what will it take to make his bike competable against a built 400ex and a stock 450r or is it worth it. he also has a 400ex but we here so much about the 250r s and how fast they are he kind of want to build it but if its not worth it let me know

Posted by: tommygunnz

you need good reeds,nice carb like 38mm keihin pwk air stryker,have ur head shaved for higher compression atleast 93 octane,bore it a bit and defenitly have a place with a good reputation port it,and last but not least get a good pipe like FTZ,trinity,CT Racing,and the bike will scream remember to take notice of limiting factors like if you had everything done but still had a stock carb etc....2 strokes are simple upgrade wise its choosing the right things to do and put on dont get junk if you want to go fast