{"product_id":"40199m09700-wiseco-std-piston-for-yamaha-yz450f-2018-2019-97mm-12-8-1-compressio","title":"40199M09700 Wiseco Std Piston for Yamaha YZ450F 2018-2019 97mm 12.8:1 Compressio","description":"\u003ch2\u003eWiseco Std Piston 40199M09700 for Yamaha\u003c\/h2\u003e\u003cp\u003eThis Wiseco Std Piston, part 40199M09700, is a 97mm forged piston rated at 12.8:1 compression, built to restore top-end power for Yamaha YZ450F models from 2018 to 2019.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco Std Piston 40199M09700 delivers a 97mm bore at 12.8:1 compression for the Yamaha YZ450F. Riders rebuilding a 2018 or 2019 YZ450F get a forged piston made to handle high-rpm motocross use. The Wiseco Std Piston restores factory bore and compression for dependable top-end performance.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged aluminum construction for high strength and heat resistance\u003c\/li\u003e\n\u003cli\u003e97mm standard bore matches the factory cylinder size\u003c\/li\u003e\n\u003cli\u003e12.8:1 compression ratio for strong combustion and response\u003c\/li\u003e\n\u003cli\u003ePrecision machined ring grooves for a consistent seal\u003c\/li\u003e\n\u003cli\u003eDesigned for the demands of four-stroke motocross engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha YZ450F 2018\u003c\/li\u003e\n\u003cli\u003efor Yamaha YZ450F 2019\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds on the Yamaha YZ450F\u003c\/li\u003e\n\u003cli\u003eMotocross and closed-course racing\u003c\/li\u003e\n\u003cli\u003eRestoring compression after piston or ring wear\u003c\/li\u003e\n\u003cli\u003eRoutine maintenance at rebuild intervals\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\u003e40199M09700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e97mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompression Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.8:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard Piston\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 piston fit a 2018 Yamaha YZ450F? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this piston is listed for the 2018 and 2019 Yamaha YZ450F at a 97mm standard bore with 12.8:1 compression. Confirm your engine is at standard bore before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this piston forged or cast? \u003cstrong\u003eA:\u003c\/strong\u003e This Wiseco piston is forged, which gives it strong resistance to heat and stress in a high-revving four-stroke. Proper clearances and ring end gaps should be set during assembly.\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":51139986194518,"sku":"OO1C22400","price":483.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_663dff25-2b87-40f5-a3f7-a59020e3ba02.jpg?v=1794565867","url":"https:\/\/www.solidspare.com\/products\/40199m09700-wiseco-std-piston-for-yamaha-yz450f-2018-2019-97mm-12-8-1-compressio","provider":"Solid Spare","version":"1.0","type":"link"}