gearing question

[Maxx Racer]

I have a 2001 400ex. Can someone tell me what the stock gearing is?

I need some help figuring out what I need to do with my gears. My bike is 11:1 416 stage 2 hot cam. I ran it on 18 in tires yesterday and I loved it. It seemed like it pulled alot harder because it kept the bike in its power band the hole time.

I run 20 inch tires when I ride.

What gear change should I make to get it to run like it has the 18's on it?

15/38 is stock. dropping the front to a 14 tooth will get you 1 MPH difference from 18" tires. 14/39 is about as close as you will get to 18" tires less than a MPH difference. I would just drop the front to a 14 tooth to make things easier. 18" tires weigh less and give you more snap though even if the gearing makes it the same as 20" tires

[Maxx Racer]

Alright thanks. I'll try that out.

[hypersnyper6947]

I have 13/36 gearing with 18" tires what does that equate to?