:Since 2001 Namura Technologies has been on a quest for global domination of the powersports aftermarket. Based in Minnesota, USA, we rely on our vast network of distributors located throughout the world to bring our products to a dealer near you. Every company claims to be an "Industry Leader”; they boast about having the best pistons, the oldest brand, or the prettiest boxes. Good for them; we let our products speak for themselves. By pushing the envelope of conventional standards, we strive to provide a superior product using the latest advancements in manufacturing techniques. Keeping that in mind, we didn’t want to be an overpriced paperweight supplier. Our philosophy is simple: deliver premium engine components that have more features than the OEM at a better price. This Kit includes everything you need to get you operational again; they come with pistons, a top end gasket kit and bearings where needed. Namura gaskets use performance materials to increase durability and provide greater reliability. Please note that this an OEM Piston and Gasket repair kit that DOES NOT HAVE MACHINED SMOOTH DOME and may appear different from your factory piston. Fits: 2001 - 2006 Polaris Sportsman 90 2003 - 2006 Polaris Predator 90 (Standard bore size - 52.00mm Piston is 51.96mm)