{"product_id":"namura-standard-bore-piston-kit-for-yamaha-warrior-350-1987-2004-yfm350x-83mm","title":"Namura Standard Bore Piston Kit for Yamaha Warrior 350 1987-2004 YFM350X 83mm","description":"\u003ch2\u003eNamura Standard Bore Piston Kit for Yamaha Warrior 350 1987-2004 YFM350X 83mm\u003c\/h2\u003e\u003cp\u003eThis Namura standard bore piston kit is a direct replacement for Yamaha Warrior 350 ATVs from 1987 to 2004 providing a 83mm bore size to restore compression and performance. The kit includes a cast piston, rings, and wrist pin for a complete top end rebuild for the YFM350X model.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura standard bore piston kit for Yamaha Warrior 350 is designed to rebuild the top end of your 1987-2004 YFM350X engine. This 83mm piston kit restores cylinder compression and improves engine reliability for off-road use. Each kit contains all necessary components for a straightforward piston replacement for the Yamaha Warrior 350.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e83mm standard bore size matches factory specifications for Yamaha Warrior 350\u003c\/li\u003e\n\u003cli\u003eHigh-strength cast aluminum piston withstands high RPM and heat\u003c\/li\u003e\n\u003cli\u003ePrecision-machined pin bore ensures proper wrist pin fit\u003c\/li\u003e\n\u003cli\u003eIncludes premium piston rings for consistent compression seal\u003c\/li\u003e\n\u003cli\u003eComplete kit with wrist pin and circlips for hassle-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Warrior 350 (1987-2004)\u003c\/li\u003e\n\u003cli\u003efor Yamaha YFM350X (1987-2004)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the top end of a Yamaha Warrior 350 after wear or piston failure\u003c\/li\u003e\n\u003cli\u003eRestoring compression and power for trail riding and recreational ATV use\u003c\/li\u003e\n\u003cli\u003eReplacing worn piston during a full engine overhaul or top end refresh\u003c\/li\u003e\n\u003cli\u003eRacing or high-performance applications when upgrading to a standard bore replacement\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\u003e83mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha Warrior 350 YFM350X 1987-2004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, Rings, Wrist Pin, Circlips\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 Do I need to hone the cylinder before installing this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is recommended to have the cylinder professionally honed or reconditioned to match the new piston for proper ring seating and compression.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the break-in procedure for this piston kit? \u003cstrong\u003eA:\u003c\/strong\u003e After installation, run the engine through several heat cycles with light loads, avoiding sustained high RPM for the first hour to allow the rings to seat correctly.\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":44890506002518,"sku":"SZ1F12038","price":142.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_7d4f3ed5-2846-4235-b916-dcd959353f9d.jpg?v=1781140863","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-piston-kit-for-yamaha-warrior-350-1987-2004-yfm350x-83mm","provider":"Solid Spare","version":"1.0","type":"link"}