any ideas on how to make my 400 faster and more powerful??

 

Don't know the bike but I'm assuming the basic rules apply. More air, Via K&N and possibly bigger intake and head work. Better Breathing via a better exaust system and more fule via a jet kit or some carb tweaks sould help.

 

thanks for the input. my bike does about 65 (downhill, wide open) and i can only get it to ride a wheelie if i stand on the back rack and hold it wide open in low range. i would like to make it run better but keep it as quiet as possible: i use my bike for trail riding and hunting.

 

65 [img]i/expressions/face-icon-small-shocked.gif[/img]

 

yes but goin on the road DOWNHILL, wide open about 6800 rpms

 

You can always trde it in for a 800efi. that might have more power and it should go a couple miles per hour faster. HEHEHE

 

i wish i could but im only 15.....

 

You must be 16 to ride the ride. lol[img]i/expressions/face-icon-small-happy.gif[/img] You can get a clutch kit around $250 and make a difference. Mine is about the same 65 down hill 62 on average. I modifed my air box and rejetted made some more power. Exhaust didn't do much if any on power and I don't recommened k&n fiters, yes they give more air and more dirt. If you can see threw the filter so can dirt. I have seen 1st hand test results and not like the one they show to sell the filter. Oil in the filter will only catch so much, and a big time racer here said it will wear the cylinder quick on dusty rides. I don't dought that at all. If moneys tight give a little more air(about 3/4 inch will be plenty) in the air box and move the needle all the way up and probley 2 to 4 jets up will make a big difference. I have plenty of power on mine. I did a 1 1/2 inch opening on mine and had to go down to 3/4 due to too much air. I list a k&n filter on mine but the stock filter with the modified air box is all I need

 

Call Rick Ritter, he will give you an honest answer and he has alot of parts in stock that should help ya.

 

If you are on a budget get you a Polaris white primary spring.It will liven the 425 motor up a little.