{"product_id":"namura-020-over-bore-top-end-repair-kit-for-yamaha-yz250-fits-2002-2024-66-9mm","title":"Namura .020 Over Bore Top End Repair Kit for Yamaha YZ250 fits 2002-2024 66.9mm","description":"\u003ch2\u003eNamura .020 Over Bore Top End Repair Kit for Yamaha YZ250\u003c\/h2\u003e\u003cp\u003eThis aftermarket top end repair kit by Namura provides all necessary components to rebuild the cylinder head of a Yamaha YZ250 two-stroke engine, featuring a .020 over bore at 66.9mm to restore compression and power.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .020 Over Bore Top End Repair Kit is designed for the Yamaha YZ250, offering a complete set of piston, rings, wrist pin, and bearings for a precise top end rebuild. This kit allows riders to refresh their engine with a .020 oversize bore, improving performance and extending engine life. Designed for Yamaha YZ250 models from 2002 to 2024, it provides a cost-effective solution for maintaining peak engine condition.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes high-strength piston with .020 over bore for increased displacement\u003c\/li\u003e\n\u003cli\u003ePrecision-machined from durable aluminum alloy for reliable operation\u003c\/li\u003e\n\u003cli\u003eComplete set includes piston rings, wrist pin, and circlips for hassle-free installation\u003c\/li\u003e\n\u003cli\u003eDesigned to meet OEM specifications for consistent compression and power output\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ250 2002-2024\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCommonly used for motocross and off-road racing where top end rebuilds are routine\u003c\/li\u003e\n\u003cli\u003eUseful for restoring performance on well-used YZ250 engines\u003c\/li\u003e\n\u003cli\u003eOften employed during seasonal engine overhauls to maintain reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\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\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha YZ250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit include a cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a top end repair kit containing piston and related components; the cylinder is reused after boring to the .020 oversize.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this kit compatible with stock cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed for a cylinder that has been bored .020 over to match the 66.9mm piston.\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":44949748645974,"sku":"SZ1F13984","price":191.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_3bd7e471-6445-4e1e-9bea-7c704e101140.jpg?v=1781397904","url":"https:\/\/www.solidspare.com\/products\/namura-020-over-bore-top-end-repair-kit-for-yamaha-yz250-fits-2002-2024-66-9mm","provider":"Solid Spare","version":"1.0","type":"link"}