{"product_id":"yamaha-motor-co-ltd-5cu-11631-00-b0-piston","title":"Yamaha Motor Co., Ltd. 5CU-11631-00-B0 Piston","description":"\u003ch3 data-section-id=\"nq8ynu\" data-start=\"0\" data-end=\"18\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"19\" data-end=\"439\"\u003eThe Yamaha 5CU-11631-00-B0 piston is used in two-stroke motorcycle engine systems. Commonly installed in Yamaha YZ250 (1999–2000 models) and similar high-performance motocross engines requiring standard bore piston replacement. Maintenance teams, engine rebuilders, and motorcycle technicians use this part for engine rebuild, compression restoration, and performance maintenance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"plkbhx\" data-start=\"441\" data-end=\"460\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"461\" data-end=\"845\"\u003eThe Yamaha 5CU-11631-00-B0 is used in motorcycle engine systems to convert combustion energy into mechanical motion by transferring force from the expanding gases to the connecting rod and crankshaft. It is widely applied in motocross bikes, racing engines, and two-stroke performance setups where precise piston fit, high durability, and optimal combustion efficiency are critical.\u003c\/p\u003e\n\u003ch3 data-section-id=\"68ulmp\" data-start=\"847\" data-end=\"878\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"879\" data-end=\"1668\"\u003e• Compatible with Yamaha YZ250 (1999–2000 models) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"966\" data-end=\"969\"\u003e• Product type: Standard piston (STD bore) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1049\" data-end=\"1052\"\u003e• Function: Converts combustion pressure into mechanical motion\u003cbr data-start=\"1115\" data-end=\"1118\"\u003e• Bore size: Approx. 66.36 mm (standard configuration) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1210\" data-end=\"1213\"\u003e• Material: Aluminum alloy piston construction for heat dissipation\u003cbr data-start=\"1280\" data-end=\"1283\"\u003e• System role: Core engine component in crankshaft and piston assembly\u003cbr data-start=\"1353\" data-end=\"1356\"\u003e• Mounting: Connected to connecting rod via wrist pin\u003cbr data-start=\"1409\" data-end=\"1412\"\u003e• Application: Two-stroke motocross and performance engines\u003cbr data-start=\"1471\" data-end=\"1474\"\u003e• OEM part number: 5CU-11631-00-B0 \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cbr data-start=\"1546\" data-end=\"1549\"\u003e• Condition: Genuine OEM part, often available as NOS or aftermarket equivalent \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1ln9bp8\" data-start=\"1670\" data-end=\"1696\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1697\" data-end=\"1777\"\u003e• Yamaha 5CU-11631-00-A0\u003cbr data-start=\"1721\" data-end=\"1724\"\u003e• Yamaha 5MW-11631-00-B0\u003cbr data-start=\"1748\" data-end=\"1751\"\u003e• Yamaha 5NX-11631-00-B0\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"New","offer_id":51733947941166,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_1eff5f60-04ef-4a13-ac11-876063f2bb88.jpg?v=1770604308","url":"https:\/\/plgautomation.com\/products\/yamaha-motor-co-ltd-5cu-11631-00-b0-piston","provider":"PLG Automation ","version":"1.0","type":"link"}