Noob piston rings?

[tav422]

I have a 96 Xp 800. I am in need of piston rings. I got the numbers off the engine (rotax 787, 82MM bore, 74MM stroke) I also noticed that on the tops of the piston there is the numbers 81, 89 stamped into them. does this mean anything? I am trying to find out if these are the standard size pistons or if they have been changed. I bought the xp from my my father in law who got it at the dealer used. however it looks like someone tried to port n polish the intake. everything else looks original / factory.

Where is a good place to order parts?

Thanks for any help.

 

[seadooya]

those are seadoo oem pistons....81.89mm so, you need the oversize piston rings...oem

 

[Dennis]

The number on top of the piston means the size of the piston is 81.89 mm.
This also means it is the original SeaDoo piston (never been bored).

DAWG