Hey guys i have a 2003 KDX 200. I really need more low end power. In order to get out of a rut I have to shift all the way down to 1st and sometimes I over rev it due to gears being to short. anyway what mods can i do to get the best and most power out of my machine. I still have stock exhaust and silencer. Please recommend what type of pipe I need to get along with silencer. thanks for your time.

You need to change your gearing. Go up a couple teeth on the rear, it should make a huge difference on how usable second gear is. Good luck!

What do you mean i need to change the gearing? How do I do that. How many teeth do you recommend to give me the most power? thanks man

Get the FMF -35 (woods) pipe, V-Force 3 reed block set up, and then properly jet the carb. I'm running 13/48 gearing (13/47 is stock), but I'm also slightly over sized on my rear tire. A gearing change will not improve your bottom end, just get you into the midrange and top end easier/faster. The pipe and jetting will blow you away....you won't believe the difference. That's what will improve your bottom end.

How much is it goin to cost me to get new gears in my bike? I am going to purchase the FMF Gnarly woods pipe pretty soon but how much is the Vforce 3 reed block gonna cost me? What size front and rear spockets do you guys suggest? How many teeth. Do i need to invest in an fmf silencer also? if so which one do you suggest? thanks again for your time

Just go with the FMF Gnarly, Turbine core II silencer, jetting, UNI filter(with no airbox lid), and if you really need it just drop a tooth on your primary sprocket. That will get you over anything, and wheelie in 3rd gear.

I might of just misunderstood, but it seems like you are asking how to change the gears inside the motor. You don't have to do that just the smaller gear in front that directly drives the chain, 10 min change tops.
I run a 12 tooth primary instead of the 13 that is stock. That will improve torque and acceleration but your top end speed will decrease.

good luck

if you want more torquw spend $20 on a 12 tooth front sprocket.

For the rear sproket do I need to get more teeth or less teeth. My main reason is that i want to be able to wheelie easily and right now i have to yank the handle bars to do so.

I tried a 48t on the rear sprocket and a 100/100 rear tire on my 220. It made a huge difference but felt too 4-stroke like for my taste (too tame). I went back to the stock 47tooth. That combo may work well for what you're looking for on your 200.

What do you mean that it felt to 4 stroke. Did it not have a lot of power. I trail ride so I need a lot of power in the bottom