{"product_id":"namura-technologies-nx-40005-4-piston-kit-1-00mm-oversize-to-40-96mm-6-0-1-compression","title":"Namura Technologies NX-40005-4 Piston Kit - 1.00mm Oversize to 40.96mm, 6.0:1 Compression","description":"Bore: 40.96mm\u003cbr\u003e Compression: 6.0:1 Compression\u003cbr\u003e Sizing: 1.00mm Oversize\u003cbr\u003e\u003cbr\u003eMOS2 (Teflon\/Molybdenum) Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Machined Smooth Heads - Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%. Anodized Domes - Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons. Hypereutectic Casting Process - Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures.\u003cbr\u003e\u003cbr\u003eVehicle Fitment:\u003cbr\u003e\u003cbr\u003e1981-2009 Yamaha PW50\u003cbr\u003e 2012-2021 Yamaha PW50","brand":"Namura Technologies","offers":[{"title":"Default Title","offer_id":44004145004666,"sku":"4914773","price":52.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0004\/3312\/7455\/files\/8d101539ce6342ce95fc3bf13cb2ecfc_9c88c521-9a97-41f0-9ce0-4bdbfbfe791b.jpg?v=1764261773","url":"https:\/\/www.powersportsuperstore.com\/products\/namura-technologies-nx-40005-4-piston-kit-1-00mm-oversize-to-40-96mm-6-0-1-compression","provider":"Powersport Superstore","version":"1.0","type":"link"}