{"product_id":"athena-p5f0770212009b-top-end-piston-kit-for-yamaha-250-yz-f-2019-2023","title":"ATHENA P5F0770212009B Top End Piston Kit for Yamaha 250 YZ-F 2019–2023","description":"\u003cp class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\u003c\/p\u003e\u003cp class=\"\" data-turn-id-container=\"request-WEB:20c5d842-8a29-4db5-8b65-826eed827320-41\" data-is-intersecting=\"true\"\u003e\u003c\/p\u003e\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:20c5d842-8a29-4db5-8b65-826eed827320-41\" data-turn-id-container=\"request-WEB:20c5d842-8a29-4db5-8b65-826eed827320-41\" data-testid=\"conversation-turn-74\" data-turn=\"assistant\"\u003e\u003cp class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\u003c\/p\u003e\n\u003cp data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\u003c\/p\u003e\n\u003cp class=\"flex max-w-full flex-col gap-4 grow\"\u003e\u003c\/p\u003e\n\u003cp data-message-author-role=\"assistant\" data-message-id=\"c087f7a6-4203-49e0-97cc-0ab4b0311835\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\u003c\/p\u003e\n\u003cp class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\u003c\/p\u003e\n\u003cp class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"629\" class=\"PDq2pG_selectionAnchorContainer\"\u003eBreathe new life into your 4-stroke engine with Athena's Forged Top End Piston Kit. Built for riders who demand peak performance and long-lasting reliability, this complete rebuild kit combines a precision-forged piston with Athena's premium top-end gasket kit for a seamless installation and race-ready results. Manufactured using a reverse extrusion forging process and precision CNC machining, the piston delivers exceptional strength, superior heat resistance, and consistent power delivery, while premium Japanese piston rings and Athena's advanced gasket technology provide outstanding sealing for confidence on every ride.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"631\" data-end=\"1165\"\u003e\n\u003cli data-section-id=\"1uhg29p\" data-start=\"631\" data-end=\"719\"\u003eComplete top-end rebuild kit featuring a forged 4-stroke piston and premium gasket set\u003c\/li\u003e\n\u003cli data-section-id=\"52x6p4\" data-start=\"720\" data-end=\"801\"\u003eReverse-extruded forged aluminum piston for exceptional strength and durability\u003c\/li\u003e\n\u003cli data-section-id=\"3627m0\" data-start=\"802\" data-end=\"873\"\u003ePrecision CNC-machined for OEM-quality fit and consistent performance\u003c\/li\u003e\n\u003cli data-section-id=\"xpzjlk\" data-start=\"874\" data-end=\"973\"\u003ePremium Japanese piston rings with wear-resistant coatings reduce friction and extend engine life\u003c\/li\u003e\n\u003cli data-section-id=\"16cso97\" data-start=\"974\" data-end=\"1065\"\u003eOptimized piston design promotes efficient combustion and smooth, reliable power delivery\u003c\/li\u003e\n\u003cli data-section-id=\"juvkfv\" data-start=\"1066\" data-end=\"1165\"\u003eAdvanced gasket materials provide dependable, leak-free sealing under demanding riding conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1167\" data-end=\"1180\"\u003e\u003cstrong data-start=\"1167\" data-end=\"1180\"\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1182\" data-end=\"1291\"\u003e\n\u003cli data-section-id=\"16n0mx3\" data-start=\"1182\" data-end=\"1206\"\u003eForged 4-Stroke Piston\u003c\/li\u003e\n\u003cli data-section-id=\"1houaud\" data-start=\"1207\" data-end=\"1225\"\u003ePiston Rings (2)\u003c\/li\u003e\n\u003cli data-section-id=\"6aqmvn\" data-start=\"1226\" data-end=\"1250\"\u003ePiston Pin \/ Wrist Pin\u003c\/li\u003e\n\u003cli data-section-id=\"6wg6ph\" data-start=\"1251\" data-end=\"1261\"\u003eCirclips\u003c\/li\u003e\n\u003cli data-section-id=\"1j4tvgc\" data-start=\"1262\" data-end=\"1291\"\u003eComplete Top End Gasket Kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1293\" data-end=\"1310\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul data-start=\"1312\" data-end=\"1499\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1ust7c8\" data-start=\"1312\" data-end=\"1334\"\u003ePiston Size: 76.96mm\u003c\/li\u003e\n\u003cli data-section-id=\"1ejhbhu\" data-start=\"1335\" data-end=\"1356\"\u003eDisplacement: 250cc\u003c\/li\u003e\n\u003cli data-section-id=\"1dex8rz\" data-start=\"1357\" data-end=\"1384\"\u003eCompression: 13.5:1\u003c\/li\u003e\n\u003cli data-section-id=\"8zn354\" data-start=\"1385\" data-end=\"1406\"\u003ePiston Type: Forged\u003c\/li\u003e\n\u003cli data-section-id=\"1ek3zvx\" data-start=\"1407\" data-end=\"1436\"\u003eCompression Height: 20.20mm\u003c\/li\u003e\n\u003cli data-section-id=\"afyesh\" data-start=\"1437\" data-end=\"1459\"\u003ePiston Pin: Standard\u003c\/li\u003e\n\u003cli data-section-id=\"1r1o7m7\" data-start=\"1460\" data-end=\"1499\" data-is-last-node=\"\"\u003eBig End Pin Diameter: 16 x 9.5 x 38mm \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden has-[\u0026gt;_:empty]:hidden\"\u003e\u003cdiv class=\"text-center\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1\"\u003e\u003cdiv\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cp\u003e\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv aria-hidden=\"true\" class=\"pointer-events-none -mt-px h-px translate-y-(--scroll-root-safe-area-inset-bottom)\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe ATHENA P5F0770212009B Top End Piston Kit is designed for the Yamaha 250 YZ-F model years 2019 through 2023. This kit is identified as a top end piston kit for the specified application.\u003c\/p\u003e\n\u003cp\u003eManufactured under the ATHENA brand, this replacement component supports top end service needs for compatible Yamaha 250 YZ-F motorcycles. Verify the part number and vehicle application before ordering to ensure the kit matches your service requirements.\u003c\/p\u003e\n\u003cp\u003ePart number P5F0770212009B provides a clear reference for identification when selecting this ATHENA piston kit for maintenance or repair.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: ATHENA\u003c\/li\u003e\n\u003cli\u003ePart Number: P5F0770212009B\u003c\/li\u003e\n\u003cli\u003eProduct Type: Top end piston kit\u003c\/li\u003e\n\u003cli\u003eApplication: Yamaha 250 YZ-F\u003c\/li\u003e\n\u003cli\u003eModel Years: 2019–2023\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":68128508215481,"sku":"227252","price":234.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/227252_1786049701.jpg?v=1793658279","url":"https:\/\/atticusgoods.com\/products\/athena-p5f0770212009b-top-end-piston-kit-for-yamaha-250-yz-f-2019-2023","provider":"Atticus Goods","version":"1.0","type":"link"}