{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"377bc11bfda3","name":"PISTON 94-00 POLARIS 300 74.50, NAMURA NA-50003 KIT ATV","sku":"56-W164.NT","brand":"Namura Technologies","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":83.52,"formatted":"£83.52"},"summary":"Namura Piston Assembly NA-50003. This piston has a 74.50mm bore. High-performance Namura pistons are engineered in the USA and manufactured in Taiwan. They are made from high-silicon content hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life and reduced scuffing. Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy. Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon/Molybdenum coated skirts. MOS2 (Teflon/Molybdenum) coated skirts perform at the highest standards, reducing friction and heat for added power and longevity. Namura rings match the OEM design except as noted.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"74.5mm"},{"label":"Variant Id","value":"254794"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W164_2ENT/c80580f4bd823534.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W164_2ENT/c80580f4bd823534.jpg"],"description":"Namura Piston Assembly NA-50003. This piston has a 74.50mm bore. High-performance Namura pistons are engineered in the USA and manufactured in Taiwan. They are made from high-silicon content hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life and reduced scuffing. Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy. Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon/Molybdenum coated skirts. MOS2 (Teflon/Molybdenum) coated skirts perform at the highest standards, reducing friction and heat for added power and longevity. Namura rings match the OEM design except as noted.","descriptionMarkdown":"### Namura Piston Assembly - 74.50mm Bore\n\nEnhance the performance and longevity of your engine with the Namura Piston Assembly. Engineered in the USA and manufactured in Taiwan, these high-performance pistons are built with a high-silicon content, hypereutectic cast aluminum material. This advanced material provides several key benefits including less heat expansion, tighter clearances, increased hardness, and reduced scuffing for a longer operational life.\n\nThe pistons feature precisely machined, smooth piston crowns designed to reduce carbon buildup, leading to increased horsepower and improved fuel economy. For even greater durability, hard anodized crowns are available, offering 75% more strength than non-anodized versions. This minimizes expansion and significantly reduces the risk of cold seizures, especially when combined with the Teflon/Molybdenum coated skirts.\n\nExperience superior performance with the MOS2 (Teflon/Molybdenum) coated skirts. This advanced coating drastically reduces friction and heat, contributing to added power and extended engine longevity. The Namura piston rings are designed to match OEM specifications, ensuring a perfect fit and reliable operation. For applications where cylinder wear has occurred, fractional oversize pistons are available to renew original clearance and extend the life of your valuable cylinder.\n\n#### Key Features:\n\n \n- High-silicon content Hypereutectic cast aluminum material\n \n- Reduced heat expansion and tighter clearances\n \n- Increased hardness and longer life\n \n- Reduced scuffing\n \n- Machined, smooth piston crowns for reduced carbon buildup\n \n- Increased horsepower and fuel economy\n \n- Hard anodized crowns (75% stronger)\n \n- Minimal expansion and reduced risk of cold seizures\n \n- MOS2 (Teflon/Molybdenum) coated skirts\n \n- Reduced friction and heat\n \n- Namura rings match OEM design\n \n- Available in fractional oversize for cylinder renewal\n \n- Bore Size: 74.50mm","weightGrams":null,"fitments":[{"make":"POLARIS","model":"2X4 300","cc":null,"notes":null,"years":"1994–2000"},{"make":"POLARIS","model":"4X4 300","cc":null,"notes":null,"years":"1994–2000"},{"make":"POLARIS","model":"6X6 300","cc":null,"notes":null,"years":"1994–2000"},{"make":"POLARIS","model":"ATV 300","cc":null,"notes":null,"years":"1994–2000"},{"make":"POLARIS","model":"XPLORER 300","cc":null,"notes":null,"years":"1996–1999"},{"make":"POLARIS","model":"XPRESS 300","cc":null,"notes":null,"years":"1996–1999"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Pistons & Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/pistons-kits"}],"links":{"page":"https://www.2brosparts.com/products/piston-94-00-polaris-300-7450-namura-na-50003-kit-atv","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/377bc11bfda3:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/377bc11bfda3:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. 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Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}