ATV Connection Magazine

how to gear down the desert cat 90

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Posted by: 2manytoys

Squeege,

One thing that made a big difference was taking out the spark arrestor. It made it more snappy and sounds awsome but not loud. There is 2 bolts that hold the arrestor in. One of them is tack welded. You can grind down the weld and unscrew both bolts. The arrestor is also a restrictor. And the good thing is if you go riding in a state park you can slide it back in and use new bolts. We went riding a few weeks back and it would struggle to make it up some pretty steep hills. When I took the restrictor/arrestor out it made it alot easier to make it up. Just a suggestion. Cheap free mod.

Posted by: Raptorlegs

Yes, there are different sizes. If you don't care about top speed, you could also remove a roller or two.

Posted by: Raptorlegs

Clutching is your problem. I'd recommend 2 things. One, a WRH aluminum clutch (I don't know that anybody else carries them). This will help raise your stall speed. And two, slightly lighter rollers. I'm running 5's in mine, down from 5.5's, and even that made a difference.

Posted by: Raptorlegs

And yes, the rollers in the front variator.

Posted by: squeege

Any aftermarket sprokets yet for polaris clones?

Posted by: squeege

I wouldn't mind loosing some top speed....it is a little too fast at top speedBR>
The rollers you are refering to are ones in the front pulley correct? I have upgraded to 2000rpm rollers and springs....would you still suggest removing a few?

It has a pipe and jetted and uni filter and hits hard in the top rpm's but lacks in the lower rpm area