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hi guys
i'm in process of buying one of these, but it's not the naked version, it comes with fairing that just look awful, so what i'm gonna do is to remove all the fairings, and some how turn it to...

trust me....don't shave the cylinder. you will decrease the displacement and the compression both....just do the head cylinder....JUST!

you want more compression? trust me. do it in the 3 following steps.
1.you can remove 1 mm from the head cylinder.
2.you can use a thick piston that might cost a lot.
3.you can use a big bore...

i got that...your right
it's the crf230 engine. but it can be easily increased to 250 by a 70.mm bore pistooon like the ax-1 piston

if you wanna increase the compression ratio the easiest way is two reduce the head cylinder height. just 1mm would be enough and effective. more compression can f..k up your piston or valves. can u...

hey guys
i dont think that would be a nice idea. cb250 is paternal twin. am i right? crf 230 has got 63.5mm bore....seems to be to much for your bike. you can use a cg 150 piston. then you will have...