I can't seem to find the rules anywhere, other than in F5 you can have up to 50cc 2 stroke or 100cc 4 stroke, and in F4 you can have up to 100cc 2 stroke or up to 140cc 4 stroke. But in the AMCC F4 results there's guys racin' 140 AND 150cc FXR's.
I've got an FXR, and I'm keen to bucket it, make a weekend kit for it, then put it back in road trim for the rest of the week, but what exactly are the rules for FXR's in buckets? Is it okay to keep the 150cc? How the hell do you make 'em 140cc? Without permanently altering it all, aka grinding the crank etc. Carb restrictions? If so what? Where exactly are the official rules? The MNZ pdf's seem to crash my Mozilla everytime I close them so if I knew which one to go to that'd be awesome. Yeah.
Any help much appreciated, cheers.
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