{"product_id":"for-yamaha-atv-big-bear-400-4x4-cylinder-piston-gasket-top-end-rebuild-kit-00-12","title":"For Yamaha ATV Big Bear 400 4x4 Cylinder Piston Gasket Top End Rebuild Kit 00-12","description":"\u003ch2\u003eTop End Rebuild Kit for Yamaha Big Bear 400 4x4\u003c\/h2\u003e\u003cp\u003eThis top end rebuild kit for Yamaha ATV Big Bear 400 4x4 models supplies a cylinder, piston, and gasket set so the upper engine can be rebuilt and returned to reliable running order.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis top end rebuild kit for Yamaha Big Bear 400 4x4 machines covers the parts that wear first in the upper engine. It pairs a replacement cylinder with a matching piston and gasket set so compression, ring seal, and oil control are restored in one job. Owners of 2000 through 2012 Big Bear 400 quads use this top end rebuild kit for Yamaha ATV service after power loss or oil burning.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCylinder, piston, and gasket set bundled as one rebuild package\u003c\/li\u003e\n\u003cli\u003eCylinder and piston matched for correct clearance and ring seal\u003c\/li\u003e\n\u003cli\u003eGasket set seals the cylinder base, head, and top end joints\u003c\/li\u003e\n\u003cli\u003eDirect replacement layout for the factory 400cc Big Bear 4x4 engine\u003c\/li\u003e\n\u003cli\u003eBuilt to handle the load of a working utility ATV\u003c\/li\u003e\n\u003cli\u003eKeeps upper-end parts matched instead of sourcing them separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha Big Bear 400 4x4 2000-2012\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding a 4x4 Big Bear 400 after compression loss\u003c\/li\u003e\n\u003cli\u003eRestoring power for plowing, hauling, and trail riding\u003c\/li\u003e\n\u003cli\u003eFixing a machine that burns oil or smokes at startup\u003c\/li\u003e\n\u003cli\u003eServicing the top end before a busy work season\u003c\/li\u003e\n\u003cli\u003eReplacing a scored cylinder on a high-hour ATV\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop end rebuild kit, no single number listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCylinder, piston, gasket set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrivetrain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4x4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePosition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop end\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 Will this kit fit any year of Big Bear 400 4x4? \u003cstrong\u003eA:\u003c\/strong\u003e The listing covers 2000 through 2012 Big Bear 400 4x4 models, but specs can vary by year. Verify your exact model year before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What else might be needed during a top end rebuild? \u003cstrong\u003eA:\u003c\/strong\u003e Along with this cylinder, piston, and gasket set, check the timing chain, valves, and wrist pin clips for wear. Replacing worn parts at the same time helps avoid a second teardown.\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":50553945555030,"sku":"ZZ3M01835","price":161.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_173040ee-224c-4e77-9b23-323e6417bdce.jpg?v=1790864959","url":"https:\/\/www.solidspare.com\/products\/for-yamaha-atv-big-bear-400-4x4-cylinder-piston-gasket-top-end-rebuild-kit-00-12","provider":"Solid Spare","version":"1.0","type":"link"}