Thread: Ever swap a Polaris 121" to 133" track?

Looking to swap the 121" track/suspension on a 93 xlt to a 133" from an sks. It is from a parts sled.

Is this a can of worms, or pretty do-able?
Would that length be really noticeable in deeper snow? Currently I just drag skiers out to CB backcountry via high traffic roads- probably not worth the trouble, but I'm open to suggestions. I do have the manual, and so far it looks like a good bit of steps for working under a spruce tree in November.

Not that hard to do, make sure your tunnel will fit the track.

Originally Posted by gunniride

Is this a can of worms, or pretty do-able?

Do-able

Originally Posted by gunniride

Would that length be really noticeable in deeper snow?

Yes

Pull the 121 out, put the 133 (136?) back in. If its the same skid it should bolt right back into place. Existing drivers and such should be the same. You might have to create some sort of tunnel extension to fit the track underneath. I have never done it myself, but am certain it can be done relativley easy.

Did a similar mod on a Yamaha Exciter II about 10 years ago.
The key thing will be clearance in the tunnel if the paddles are deeper on the new track.
I ended up gearing down the drivers one tooth in order to get the new track to clear the heat exchange. This is all pretty much doable, hell, take a look at some of the shit they do on mod sleds these days.

Thanks for the comments.

In case anyone happens to search for this down the road- it is a can of worms. I honestly have no idea how the book instructions would work- (taking the drive shaft out without removing the entire chaincase). Luckily, I had the parts sled to tear up figuring out that removing the chaincase entirely was the way to go. Then I had to remove the mounting brackets and place them about 2" further back which was a PITA but doable, and swap the tunnel extensions as well.

It is done now and I'll see over the weekend if the extra 12" of track and bigger lugs was worth all the effort.

So, you ended up rolling the chain case? That could be sweet for a little short tracker.

Should make a pretty good difference. I remember when i first started riding (about 93 or 94) and 136" XLT 600s were the 'monsters'. Had a lot of fun, maybe more than on the new sleds. Still haven't had one that sounded as rippin' mean as the triple-piped XLT.

I guess you have it done now, so you know. Track swaps shouldn't be terribly difficult, as long as you know what parts you're going to need (rail and/or tunnel extensions), and if the track will clear heat exchangers, rivets, etc.

Wrestling it up into place, when there's very little clearance, is a pain in the ass, but doable. Liberal use of lubricant in the tunnel helps prevent the rubber track from jamming, and allows you to get it into place much easier.