Hello Guys, and gals,

New here and have recnetly bought a left over 06 Crossfire 600 Sno Pro. I'm very happy with it how ever I recently did a track change on it to a 2" Challenger Track and now my top end is about 70 miles an hour and before it was 90-92. What do I need to do here to get some of it back It was done at the dealer and I would expect some change but not 20 miles an hour. Also I'm actually revving a little higher than before, about 8040rpm now.

What to do?

Great investment!! Welcome to the crossfire riders club. Well, anytime that you put a deeper lug track on a sled, you are going to lose top end speed. And the sad note, there isn't anything you can do about it. As far as your overrevving, loosen the secondary spring up and that should take care of it.

Thanks for the info,
I did expect to loss some top end but doesn't 20 mile an hour seem excessive? The deal said to get it back I should gear like an M now, I guess I will look into that.

Welcome aboard, You have made a fine choice in purchasing the XF. It does suck to lose top end but depending what kind of riding you are doing. I ride a M8 162X15X2.25". I spend 95% of my time in deep mountian snow and how fast the sled goes is not that important to me. What I need is track speed (torque) that is what gets me up the hills and through the deep powder. So one would have to ask themself what kind of snow will I spend most of my time in and go from there Just my 2 cents. Good luck and and be safe.

I would invest in a clutch kit to get more of that power down on that track.

just talked to my buddy with a polaris 600 with a 136 and he put a 2" on it and tops out at 70. fyi

There are a couple of things that can be done to help. First off is to get the clutching in order. Verify that the track tension is set properly. Those are the two easiest. The next one is get the track ported. Porting the track consists of drilling out breather holes in the belts. usually 1" to 1-1/4" in a pattern like adding studs. Porting will reduce some of the air compression that occurs in the tunnel by allowing another place for the air to go.