gearing question

[jcs327]

I need a litle more low end on my yfz that is bone stock right now. my wife rides it sometimes and follows my little girl on her 50. she claims that to her, the 450 doe not have as much low end as my built 400ex. I am considering changing gearing, but I still want to be able to rock xc. any suggestions?

[Lokiyfz450]

Just add one tooth to the rear sprocket would be the cheapest way. So from a 38T to a 39T would do the trick.
That or you can pull the baffle out, take the air lid off and rejet that should give you more bottom punch. Or you can get a pipe it makes a big diffrence in power.

[jcs327]

I have an fmf t4 ordered. What jetting combination do you reccomend for 500' above sea level in west tn with the airbox lid off.? thanks

[shep]

45 pilot 165 170 main needle up 1 clip air screw 2.5 turnsout from bottom,just a starting point........every bike is different!!:)

[geogeorge]

Hay shep why don't you come tune my 450 for me?

YOu could try going down one tooth on the front sprockit. It worked for me on my 660 so it should do the same for you on a 450.

[jcs327]

thanks shep. going to pick up some jets tomorrow.