450 mxr to 525s

[sskip75]

I'm trying to find out how to change my 450 mxr into a 525s. So far I have found that I would need a new piston and cylinder, also there are some adjustments within the carb. Other than these differences I can't find any other info. I have a manual and was able to find these diferences there. As for the dealer they were not to forthcoming with info. Has anyone done this? Is it as simple as the changes I mentioned, Or am I missing something? Any help on this would be greatly appreciated.

[beastlywarrior]

pretty sure its just piston and cylinder

[Polaris 450MXR]

You will also have to change the jetting in the carb. Best thing is to buy a jet kit If you look at the two carbs on the fisch you will see that the 525 carb has a few different jet sizes than the mxr setup.