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Ok folks, I have more questions that perhaps you can help me with. Instead of spending "OH MY GOD" for a CRF 250, what could I do to up the performance on my 2005 CRF230? I started to think about it, and realized I don't want oddles more power as I'm pretty happy with it now, but about 3 to 5 more horse would put me right where I want. I find the bike a little slow off the line and would like to change that. I don't really use the bigger gears as I don't have a death wish to fly through the mountain passes at 60 MPH. 47 years old and a fear of big pain will do that to you . Now any suggestions that you give me, please bear in mind that I want to stay within club noise limits and such. Looking forward to your help folks.
CRF-250X Son
2006 500 EFI Polaris ATV Dad
1984 Goldwing 1100 Dad
Adding a tooth or two to the rear sprocket would do alot for the low end, other than that get the jetting right and I believe an FMF Q would help unleash more boost while keeping the db's down. I'm not a Honda guy so I'm not sure what else that bike needs. You could go to www.thumpertalk.com and check in the Honda section for more info. WR Dave.
" Old Canadian Tire Supercycle 12 speed Mountain Bike " Good call Porschev !!
Yup, if you want more grunt downlow put on a tooth or two on the rear. (like switching a pedel bike up in the rear).
It basically changes the RPM of the engine to the speed you are going. In this case higher RPM at a slower speed. With the power curve of your engine (higher RPM = more power) you will be increase the power available down low and off the line but topping out the RPM (shifting more gears) at higher speeds.
One tooth can make a big difference, especially to the front. A general guideline is +/- 1 to the front sproket is ~ = 2 +/- on the rear.
My wife has a 2003 CRF230, great bike for her and a neat playbike for me. We have added a BBR revbox (allows the egine to rev higher) and a full BBR exhaust along with rejetting the carb. This allows the engine to breathe much better. It sounds like an XR650 coming at you, funny to see this chick on a little honda rippin through the woods. The only complaint I have with these bikes is the rear drum, if it had a disc it would be soo much better...
Also look into the Sidewinder chain conversion, it uses a lighter duty o-ring chain that would reduce drag and free up a few more ponies. I think BBR also makes a big bore kit for these bikes as well.
for a CRF 250, what could I do to up the performance on my 2005 CRF230? I started to think about it, and realized I don't want oddles more power as I'm pretty happy with it now, but about 3 to 5 more horse would put me right where I want. I find the bike a little slow off the line and would like to change that. I don't really use the bigger gears as I don't have a death wish to fly through the mountain passes at 60 MPH. 47 years old and a fear of big pain will do that to you 
. Now any suggestions that you give me, please bear in mind that I want to stay within club noise limits and such. Looking forward to your help folks. 
