{"product_id":"namura-020-over-bore-piston-rings-for-yamaha-yz250-yz250x-1999-2024-66-9mm","title":"Namura .020 Over Bore Piston Rings for Yamaha YZ250 \u0026 YZ250X 1999-2024 - 66.9mm","description":"\u003ch2\u003e.020 Over Bore Piston Rings for for Yamaha\u003c\/h2\u003e\u003cp\u003eThese Namura .020 Over Bore Piston Rings for for Yamaha provide improved compression and oil control for 66.9mm bore cylinder assemblies.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .020 Over Bore Piston Rings for for Yamaha restore engine compression and sealing in worn cylinder bores. Each .020 Over Bore Piston Rings for for Yamaha set includes rings designed to operate under high-stress conditions. Engine builders utilize these .020 Over Bore Piston Rings for for Yamaha to maintain performance after a cylinder bore service.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHard-chrome plating for wear resistance\u003c\/li\u003e\n\u003cli\u003ePrecise end-gap tolerances\u003c\/li\u003e\n\u003cli\u003eReduced friction for improved efficiency\u003c\/li\u003e\n\u003cli\u003eEngineered for consistent heat dissipation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ250\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ250X\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end engine rebuilds\u003c\/li\u003e\n\u003cli\u003eRestoring cylinder compression\u003c\/li\u003e\n\u003cli\u003eRoutine piston maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do these rings require honing the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e A fresh hone is recommended to ensure the new rings seat correctly against the cylinder wall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I measure ring end gap? \u003cstrong\u003eA:\u003c\/strong\u003e Place each ring in the cylinder bore square and use a feeler gauge to measure the gap according to service manual specifications.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44792247681110,"sku":"SZ1F01669","price":30.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_a05f6dd5-0b6f-4132-aa17-607a0b57d845.jpg?v=1780064555","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-piston-rings-for-yamaha-yz250-yz250x-1999-2024-66-9mm","provider":"Solid Spare","version":"1.0","type":"link"}