{"product_id":"yamaha-genuine-ca50-riva-50-standard-piston-std-14t-11631-00-a0","title":"Yamaha Genuine CA50 Riva 50 Standard Piston (STD) 14T-11631-00-A0","description":"\u003cp\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0899\/5009\/3636\/files\/download.png?v=1736759431\" alt=\"Yamaha Genuine OEM\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"3\"\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"0\"\u003eProduct Description\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4\"\u003e\u003cspan\u003eBrand new official Yamaha factory selective-grade standard piston designed for classic two-stroke scooter engine overhauls.\u003c\/span\u003e\u003cspan\u003e Precision-cast from advanced high-temperature aluminum alloy to exact factory sorting specifications (-A0 selective grade),\u003c\/span\u003e\u003cspan\u003e engineered to deliver precise piston-to-wall clearance,\u003c\/span\u003e\u003cspan\u003e maximum compression retention,\u003c\/span\u003e\u003cspan\u003e and superior thermal durability under normal operating conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5\"\u003e\u003cb data-path-to-node=\"5\" data-index-in-node=\"0\"\u003eVehicle Compatibility\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"6\"\u003e\u003cspan\u003eEngineered explicitly for \u003c\/span\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"26\"\u003eYamaha classic two-stroke scooter platforms\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"7\"\u003e\u003cspan\u003eVerified catalog fitment layout:\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable data-path-to-node=\"8\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMake\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Family\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type \/ Displacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,0,0\"\u003e\u003cb data-path-to-node=\"8,1,0,0\" data-index-in-node=\"0\"\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,1,0\"\u003eCA50 Riva 50 \/ Riva 50K \/ 50L \/ 50N \/ 50S\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,2,0\"\u003e50cc (Air-Cooled 2-Stroke Single Scooter)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,1,3,0\"\u003e1983–1986\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,0,0\"\u003e\u003cb data-path-to-node=\"8,2,0,0\" data-index-in-node=\"0\"\u003eYamaha\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,1,0\"\u003eCY50 Jog \/ Riva 50 (Later variants)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,2,0\"\u003e50cc (Air-Cooled 2-Stroke Single Scooter)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"8,2,3,0\"\u003e1994–1995\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"9\"\u003e \u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eFitment \u0026amp; Technical Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"10\"\u003e\u003cspan\u003eVerify the cylinder bore stamping code to match the correct selective piston grade (-A0 sizing tier) for optimal running clearance.\u003c\/span\u003e\u003cspan\u003e Measure ring end gaps and piston-to-cylinder wall clearance strictly to factory service manual specifications prior to assembly.\u003c\/span\u003e\u003cspan\u003e Liberally lubricate the small-end needle bearing,\u003c\/span\u003e\u003cspan\u003e wrist pin,\u003c\/span\u003e\u003cspan\u003e and cylinder walls with high-grade two-stroke pre-mix oil before final installation.\u003c\/span\u003e\u003ci data-path-to-node=\"10\" data-index-in-node=\"407\"\u003eVerification:\u003c\/i\u003e\u003cspan\u003e Piston glides smoothly through the cylinder bore with exact factory-specified clearance,\u003c\/span\u003e\u003cspan\u003e ensuring optimal ring sealing,\u003c\/span\u003e\u003cspan\u003e reduced mechanical friction,\u003c\/span\u003e\u003cspan\u003e and maximum thermal endurance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePlease ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!\u003c\/p\u003e\n\u003cp\u003eAt\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDmmotorcycles\u003c\/strong\u003e, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003egenuine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand high-quality\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eaftermarket\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eparts and continually update our inventory to meet growing demand.\u003c\/p\u003e\n\u003cp\u003eLooking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.\u003c\/p\u003e\n\u003cp\u003eWe’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.\u003c\/p\u003e\n\u003cp\u003ePlease note:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll parts are shipped from Cyprus (Europe).\u003c\/li\u003e\n\u003cli\u003eCustomers outside the EU may incur additional import taxes based on the value of the item.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003e\u003cimg alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":54207385928004,"sku":"EB-296955309385","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0899\/5009\/3636\/files\/57_8ddb7652-d989-4e58-a841-4a390708aead.jpg?v=1738833669","url":"https:\/\/www.dm-motorcycles.com\/products\/yamaha-genuine-ca50-riva-50-standard-piston-std-14t-11631-00-a0","provider":"www.dm-motorcycles.com","version":"1.0","type":"link"}