Today I put on some turf tamers 18/9-5 rear's and Rikens in front on my 300EX. My problem is the sprockets I think.I no If you go to smaller tires you have to change sprocket size write? What size schould I change to? Or what else schould I do. Please help.

 

i went from stock (20x10x9) tires on my 400ex to 18x9x11 shedder and didn't change sprockets but i plan to in the near future but for the purpose of more speed. so to answer your question i don't think to you to change sprockets but it won';t hurt if you do

 

Well I was riding back behind our house and I thought I was riding in 3rd gear but I was reving out in 5th.And I have hardley any mid-range and top-end power.So I think I need to change sprocket size but don't no.So what do I do?

 

Running smaller tires effectively LOWERS the gearing of your 300 EX. Thereby increasing the low end power of the quad. You can remedy this somewhat by going to a 14 tooth front sprocket> if you still desire more speed, you may even try a 37 tooth rear sprocket.

 

Your bike is geared for a particular tire size so if you change to a different tire size you should also change your gears to retain the specific gearing. When changing to a smaller diameter tire you could do two things 1)go up on the front sprocket or 2)go down on the rear sprocket.

 

15-38 being stock-w-20 inch tire.
would leed me to believe,,,
14-37 or a 14-36 would be the fix with a 18.
top end,,13-33.

I run a 14-39 with 22's =10% lower than stock.
And have a 40 for billy goat.

 

stock is 22-10-9, i went down to 20-11-9 shredders on my 300EX and i went to a 14 tooth (stock 13/38)front sprocket. it evened it out to very near stock. you could try 15/38 to even it out or 15/36 if you crave top end ssppeedd!!

 

I stand corected, All though I find it hard to believe a 22 come stock on a 300. Reference confirmed.

Anyway 14-37 Would put you right, Left of center or 14-36 for top end.

Stock is 13-38, no confirmed listed.Hmmmmm?

 

here's the deal,you need a 14 in front and 37 in back. I don't think you can put a 15 on the front of a 300ex. if you still want more top speed put a 36 on the rear. ok later