What kind of teeth does your quad have??

[slosh13]

Fill me in on some input on sprockets. I have to be buying new ones here pretty soon. I mostly race motocross and I wanting some front sprocket vs. rear sprocket configurations to give my bike a little more get up and go. Also, what kind of chain is a good brand to look into? Any advice or help is greatly appreciated

[wilkin250r]

I don't personally have a 400EX, but I've heard 1 tooth down in the front, and 1 up in the rear for motocross. I think that would make it a 14/39? I'm open to corrections...

[sbexrider4life]

since u race mx ur probably looking for awesome acceleration and high revs. if u look at http://www.sidewindersprockets.com/images/ratioa.gif it will show all hope it helps

[Texan32]

there was an article in a mag about sprockets. It said that though it is usually more expensive, it is getter for the engine and the chain if you change the rear sprocket.

the front sprocket is attached to the main output shaft and only has 15 teeth. Up or down one, that a dramatic change in gearing. Going down one (more low end) put alot more stress on the shaft. It also changes the pitch in which the chain sits between the teeth. This leads to premature wear.

The rear sprocket had 38 teeth. If you go up or down 1(or even 2), that is alot less dramatic change. It also doesn't put the added stress directly on the tranny.

Since you race MX mostly, have you thought about going to 18 rear tires? If so, you need to consider that as well. most who run 18 inch rears and stock gearing say that 1st gear is pretty much useless (too low).

Personally, here is my plan. I like to trail ride, mx and just play around. I have a set of factory tires and wheels. I am about to purchase a set of mx tires (18's on the rear) and new wheels. Along with the tires, i am gonna go down 1 tooth on the rear. That way, 1st gear is usable when i mx and when i have my factory tires on, i have a little more top end than the other guy:p

Hope this all makes sence....

[Evan400ex]

I went down a tooth on my front sprocket but I think I almost have to much low end power. It seems that I lost a ton of top end power! I might switch back to the 15 in the front. It seems like I get to 5th gear in no time and not going very fast.:huh

[proquad_20]

i run the stock front and dropped to a 36 rear with 18" rear tires. works like a champ for mx and xc. smaller rear sproket stretches out the gears a bit so you dont have to shift as much

[EvilJester400EX]

I personally run 15/36 gearing.

Originally posted by proquad_20
i run the stock front and dropped to a 36 rear with 18" rear tires. works like a champ for mx and xc. smaller rear sproket stretches out the gears a bit so you dont have to shift as much

[cals400ex]

15/36 works good for me.

[muff]

Originally posted by proquad_20
i run the stock front and dropped to a 36 rear with 18" rear tires. works like a champ for mx and xc. smaller rear sproket stretches out the gears a bit so you dont have to shift as much

same setup I have :D ....and if you put 20"+ rear tires on you'll have a nice top speed :eek2:

[LRD_27]

I run 16/36 with 18'' Turf Tamer.It run great!

[300exlunatic]

on my 300ex what gearing should i use for more top speed

[muff]

Originally posted by 300exlunatic
on my 300ex what gearing should i use for more top speed

get a 14 tooth for the front

[phatswinn]

14/36 here

i stripped a countershaft too:devil: fugging honda...