ok i use it for everything wheelies jumps trails mud snow work ext i have to get new sprockts and a new chain and snow tirees so im getting mud sharks but i want to get the 25 in version wat sprocket size wud i need to make it like stock and how much would the 25 in tires affecy ground clearence and cornering and wheelies? is it better to stick with 21 or get diff tires in 22?
thanks steve

 

Give me your front and rear sprocket size and I will "try" to do the math for you. As far as ground clearance goes, the 25's will give you two more inches of ground clearance.

 

13/40

 

Your current gear ratio with a 13/40 sprockets is 3.07 to 1. To maintain this gearing with the new tires you would need a gear ratio of 3.65 to 1. A 12/44 sprocket arangment will give you a 3.67 which is close enough. If you are going to be running that type of aggressive tire, I would probably go even deeper in the gearing with a 12/48 set up this will give you a gear ratio of 4 to 1. This will give you more grunt to turn those bigger tires and pop wheelies. The 25" tires will give you 2" more in ground clearence over the 21's I dont think this will make too much of a difference in cornering but I could be wrong.

 

Good post coolmudrunner. I did mine on a % basis. I think I did it right? According to my goeszoonta's, speedped79 if you go to an 11 sprocket on the front you will be close to stock gearing with your 40 on the back. If you want to gear it down like coolmudrunner said you could go to a 10. I have no idea if they make either for your quad. I'm just doing the math. If they do, you can change gears rather cheaply.
I think I did that right? Been a while since I've done ratio's.

 

I went all the way through calculus in High school. At least I get to use some of it here. [img]i/expressions/face-icon-small-smile.gif[/img]