This top end rebuild kit includes a brand new STANDARD SIZE Namura piston with rings and piston pin. If your cylinder is in good condition and just needs a quick hone then this standard size piston should work for you. You will also receive a top end gasket kit to rebuild the top end of your Polaris 330 four stroke motor. Don’t ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Namura pistons are direct OEM replacements with a few key advantages. First is the Teflon/Molybdenum coating on the skirts to increase heat transfer, reduce friction and reduces scuffing and seizures. Machined smooth heads and anodized domes increase durability and can even add horsepower and fuel economy. Lastly, the Hypereutectic casting process provides a higher silicon content for reduced expansion rates and additional wear resistance. Namura pistons are simply the best value on the market. All the advantages of a top of the line piston at a great price! Include a new STD piston kit and all of the following top end gaskets shown in the photo including: Head Gasket Base Gasket Valve Cover O-Ring Exhaust Gasket Breather Cover Gasket Valve Seals Tensioner Gasket This piston and gasket kit.

Fits the following models:

2004-05 ATP 330

2003-06 Magnum 330

2003-13 Trail Boss 330

2008-13 Trail Blazer 330

We make every attempt to ensure every items fitment is accurate. We do the testing on each item before its listed for sale to ensure fitment and quality. Items may fit multiple years and models listed.