I have a 98 polaris trailblazer 250 that I need to replace the chain on and I was gonna replace the sprockets while I am at it. Just seems that this quad is under powered for most everything, expecially climbing some dunes if I dont have a good run at it...lol..Most trails aren't to bad as long as I keep running hard. I was wondering what tooth for front and back would be best to possibly help. Right now the chain is 520-88, front sprocket 12t, and rear 42t. My options for new front sprockets are 11,12,13. And rear are 34,38,40,42. Should I stay the same, and if I choose a different size how will it effect the chain legnth?? All suggestions are very much appreciated!!!

 

Try the trailblazer guys at Gen 3 USA.

Sounds like you need an RCR stage 1 kit to go with your chain and sprockets.