{"product_id":"namura-top-end-repair-kit-2002-2018-yamaha-yz85-48mm","title":"Namura Top End Repair Kit (0.50mm Oversize – 47.95mm)","description":"\u003cdiv\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv dir=\"ltr\" aria-live=\"polite\" aria-busy=\"false\" id=\"model-response-message-contentr_80d07a649ab69fad\" class=\"markdown markdown-main-panel enable-updated-hr-color force-compact-layout tutor-markdown-rendering\"\u003e\n\u003ch3 data-path-to-node=\"2\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"2\"\u003eNamura Top End Repair Kit (0.50mm Oversize – 47.95mm)\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"3\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"3\"\u003ePart Number:\u003c\/b\u003e NX-40085-2K\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003eGive your dirt bike new life with a complete \u003cb data-index-in-node=\"45\" data-path-to-node=\"4\"\u003eNamura Technologies Top End Repair Kit\u003c\/b\u003e. Engineered as a direct fit upgrade for 85cc Yamaha models, this kit features high-silicon hypereutectic aluminum construction and advanced skirt coatings to deliver reliable power, excellent heat dissipation, and long-lasting performance.\u003c\/p\u003e\n\u003chr data-path-to-node=\"5\"\u003e\n\u003ch4 data-path-to-node=\"6\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"6\"\u003eKey Features:\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,0,0\"\u003eMOS2 (Molybdenum\/Teflon) Coated Skirts:\u003c\/b\u003e A rolled-on application creates a bond up to 10 times stronger than traditional spray coatings, significantly reducing friction, aiding heat transfer, and helping prevent cold seizures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,1,0\"\u003eAnodized Piston Domes:\u003c\/b\u003e Increase heat resistance and structural integrity—up to 75% stronger than non-anodized pistons.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,2,0\"\u003eMachined Smooth Heads:\u003c\/b\u003e Reflects combustion heat to minimize carbon buildup, protecting the piston head and maintaining peak engine efficiency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,3,0\"\u003eHypereutectic Aluminum Alloy:\u003c\/b\u003e High-silicon content controls thermal expansion under high operating temperatures, maintaining correct tolerances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,4,0\"\u003ePremium Riken Rings:\u003c\/b\u003e OEM-quality ring set included for maximum compression sealing and power transfer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"8\"\u003e\n\u003ch4 data-path-to-node=\"9\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"9\"\u003eWhat’s Included:\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e(1) Namura 47.95mm Oversize Piston (+0.50mm \/ .020\" Over)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e(1) Complete Set of OEM-Quality Riken Piston Rings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e(1) Wrist Pin \u0026amp; Circlips\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e(1) Complete Top-End Gasket Set\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"11\"\u003e\n\u003ch4 data-path-to-node=\"12\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"12\"\u003eFitment:\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"13,0,0\"\u003e2002–2018 Yamaha YZ85\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"14\"\u003e\n\u003cblockquote data-path-to-node=\"15\"\u003e\n\u003cp data-path-to-node=\"15,0\"\u003e⚠️ \u003cb data-index-in-node=\"3\" data-path-to-node=\"15,0\"\u003eImportant Fitment \u0026amp; Cylinder Notice:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"15,1\"\u003eThis kit is a \u003cb data-index-in-node=\"14\" data-path-to-node=\"15,1\"\u003e0.50mm Oversize (+0.50mm \/ .020\" Over) piston kit designed for a 47.95mm cylinder bore\u003c\/b\u003e. Cylinder boring or honing is required for proper fitment. Always accurately measure your cylinder prior to installation to confirm correct piston-to-wall clearance.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: #212b36; font-family: -apple-system, BlinkMacSystemFont, San Francisco, Segoe UI, Roboto, Helvetica Neue, sans-serif;\"\u003e \u003cspan style=\"font-size: 14px;\"\u003e \u003cb\u003e \u003cbr\u003e\u003c\/b\u003e \u003c\/span\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; font-family: -apple-system, BlinkMacSystemFont,;\"\u003e\n\u003cdiv\u003e*Free Shipping!\u003c\/div\u003e\n\u003cdiv\u003e*📦 We only ship to the lower 48 states. We do not ship to Alaska, Hawaii, Guam, or Puerto Rico\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: large; font-family: Arial;\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003e \u003cimg src=\"https:\/\/hit.ebsh.io\/t\/hit.gif\" style=\"max-width: 100%;\"\u003e \u003c\/span\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Namura","offers":[{"title":"Default Title","offer_id":41711891906634,"sku":"NX-40085-2K","price":62.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0226\/1499\/9114\/files\/10_baee87b0-e979-42bc-8522-0d4f16340080.jpg?v=1730842583","url":"https:\/\/updogindustries.com\/products\/namura-top-end-repair-kit-2002-2018-yamaha-yz85-48mm","provider":"UpdogIndustries.com","version":"1.0","type":"link"}