sprocket size?

[lsr400ex48]

hey i have the stock 400ex sprockets on my bike right now. im looking to get a little more acceleration out of it. i have 18 size holeshot mxr4 tires on the rear. is it worth it to drop a tooth or add one in the front or should i keep the stock sprocket sizes, thanks.

[ride_red666]

what kind of riding do you do? when i ride trails i drop down to a 14 but u lose noticable top end. but id does have more bottom and mid with it on. buy some sizes and see hwta u like best

[Unverfehrt400ex]

Yeh, There a cheap investment. Just buy a 14 and try it. Im switchin mine all the time. for good trail ridin i run the 14 but if i know ill be runnin at higher speeds i put the 15 back on for that day. Its all your preference.

[lsr400ex48]

thanks for the help. i'll doing mx racing and nothing else pretty much. anyone else have an imput please post up.

[NCexRider]

That is unless you have an '05 or '06 in which case you'd need a 13 tooth in order to drop one in the front.

[400exMO]

I have an 03 and run a 13 up front with 20 inch rear tires. Much better than stock sprocket.

[Wandell]

Primary Drive front sprockets are like $6 a piece at Rocky Mountain ATV. It's worth the investment to experiment.

[stc416rider]

i have that sprocket i like it

[LightningEX]

I just switched from a stock 15 on my 2002 to a 14 JT racing sprocket.I miss the top end some but in second gear going up a sand hill is a blast when you tap the throttle and rip a wheelie up it!

[Rip_Tear]

Have you done anything to your quad? Like air filter or pipe etc? With 18's and stock gearing your acceleration should be pretty good, going down 1 tooth in the front is like going up 3 teeth in the rear (so it's kind of overkill) but it sucks making that rear sprocket any bigger.

[curious george]

i have an open air box with a 16t front it dynos the same as a 15t closed box. so i have the top end, the harley sound, and the low end i am happy.