I'm 5'6 and I have the CRF230 Offroad Version with Baja Designs Kit, I got it Street Legal CA plated and I too wanted more power from my 223cc bike. Basically what I want is a Dirtbike that is street legal, not a dual sport bike that 'can' go offroad. That is what the manufacturers need to know, and people need to tell them to make a dirtbike just like the 230 but with better suspension and more power, and must have 6 gears, preferably air cooled for easy maintenance and a low seat height, but not too low, 34 is perfect if you ask me. The bike has to be roomy enough but not too cramped, and it has to have MX like suspension, front and rear disc brakes, all the bell's and whistles. They need something in between the CRF230 and XR650, and if air cooled isn't practical, then I'll take water cooled 450cc's.
My CRF230 dirtbike's carb has been rejetted, a UNI airfilter installed, snorkel removed, 14T front sprocket, 49T aluminum rear sprocket, (stock gearing is 13/50, my gearing gives a few more mph top end) FMF slip on pipe, kenda dual sport tires, trailtech speedometer, and have recently put in new clutch discs (whether I needed to or not), I've put over 3,000 miles on it since March 2005. I change the oil once a month, maintenence is what makes this bike so badass versus a water cooled bike, its reliable and cheap to maintain except the battery is always dead and I always have to bump start (the reason why I put new discs in..). So a backup kickstart is a must!! I wanted more power and better suspension and ended up buying a 150R and then a 250x. The 150R was too small and cramped, the 250x was too tall and I couldn't get them street legal in CA. I lost a bunch of money and got rid of them for a DRZ400SM. I put the FCR carb on it and am pleased with the power of DRZ400SM bike, (yeah I still want more power, who doesn't?, but any faster and I would get myself in real trouble. I don't want to dual sport it at all, just use it on the street (I have been to El Mirage with the SM tho .
I love both these bikes and end up riding my CRF230 on the street way more than I do offroad, I just wish it had more power and suspension like the 400 because the 230 has a lower seat height and weighs like 60 lbs less (even though it is certainly heavy and could certainly use a diet!), plus it has dirt bike tires 21 inch front and 18 inch rear and can do sharp turns and has 6 gears. Having a dirtbike on the street rocks, I don't care what anyone says, dirtbikes and Supermotard are . I'm about to go take my motorcycle test on the CRF230, should be pretty easy on it.
Basically someone needs to make an air cooled dirtbike with at least 400cc with a low enough seat height, low weight, good suspension, that is street legal. The DRZ400S fits that description, except it only has 5 gears, weighs a lot, and has a high seat height. but I chose the DRZ400SM because it has the lower seat height, but still it does not steer and make sharp turns like my 230. I can't be the only one who wants to ride their dirtbike on the street, CA emissions and laws suck:foul: