{"product_id":"athena-p5f0770187009b-top-end-piston-kit-for-yamaha-250-wr-f-yz-f-2016-2018","title":"ATHENA P5F0770187009B Top End Piston Kit for Yamaha 250 WR-F \/ YZ-F 2016–2018","description":"\u003cp data-start=\"0\" data-end=\"635\" class=\"PDq2pG_selectionAnchorContainer\"\u003eBreathe new life into your 4-stroke enduro engine with Athena's Forged Top End Piston Kit. Designed for riders who demand maximum performance and long-lasting reliability, this complete rebuild kit pairs 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 smooth power delivery, while premium Japanese piston rings and Athena's advanced gasket technology provide outstanding sealing for confidence in every ride.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul data-start=\"637\" data-end=\"1171\"\u003e\n\u003cli data-section-id=\"1uhg29p\" data-start=\"637\" data-end=\"725\"\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=\"726\" data-end=\"807\"\u003eReverse-extruded forged aluminum piston for exceptional strength and durability\u003c\/li\u003e\n\u003cli data-section-id=\"xk7ptc\" data-start=\"808\" data-end=\"877\"\u003ePrecision CNC-machined for OEM-quality fit and reliable performance\u003c\/li\u003e\n\u003cli data-section-id=\"xpzjlk\" data-start=\"878\" data-end=\"977\"\u003ePremium Japanese piston rings with wear-resistant coatings reduce friction and extend engine life\u003c\/li\u003e\n\u003cli data-section-id=\"1l4sss3\" data-start=\"978\" data-end=\"1071\"\u003eOptimized piston design promotes efficient combustion and smooth, consistent power delivery\u003c\/li\u003e\n\u003cli data-section-id=\"juvkfv\" data-start=\"1072\" data-end=\"1171\"\u003eAdvanced gasket materials provide dependable, leak-free sealing under demanding riding conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-start=\"1173\" data-end=\"1186\"\u003e\u003cstrong data-start=\"1173\" data-end=\"1186\"\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul data-start=\"1188\" data-end=\"1297\"\u003e\n\u003cli data-section-id=\"16n0mx3\" data-start=\"1188\" data-end=\"1212\"\u003eForged 4-Stroke Piston\u003c\/li\u003e\n\u003cli data-section-id=\"1houaud\" data-start=\"1213\" data-end=\"1231\"\u003ePiston Rings (2)\u003c\/li\u003e\n\u003cli data-section-id=\"6aqmvn\" data-start=\"1232\" data-end=\"1256\"\u003ePiston Pin \/ Wrist Pin\u003c\/li\u003e\n\u003cli data-section-id=\"6wg6ph\" data-start=\"1257\" data-end=\"1267\"\u003eCirclips\u003c\/li\u003e\n\u003cli data-section-id=\"1j4tvgc\" data-start=\"1268\" data-end=\"1297\"\u003eComplete Top End Gasket Kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-start=\"1299\" data-end=\"1316\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul data-start=\"1318\" data-end=\"1534\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1ust7c8\" data-start=\"1318\" data-end=\"1340\"\u003ePiston Size: 76.96mm\u003c\/li\u003e\n\u003cli data-section-id=\"1ejhbhu\" data-start=\"1341\" data-end=\"1362\"\u003eDisplacement: 250cc\u003c\/li\u003e\n\u003cli data-section-id=\"1dex8rz\" data-start=\"1363\" data-end=\"1390\"\u003eCompression: 13.5:1\u003c\/li\u003e\n\u003cli data-section-id=\"8zn354\" data-start=\"1391\" data-end=\"1412\"\u003ePiston Type: Forged\u003c\/li\u003e\n\u003cli data-section-id=\"1ek3zvx\" data-start=\"1442\" data-end=\"1471\"\u003eCompression Height: 20.20mm\u003c\/li\u003e\n\u003cli data-section-id=\"afyesh\" data-start=\"1472\" data-end=\"1494\"\u003ePiston Pin: Standard\u003c\/li\u003e\n\u003cli data-section-id=\"1r1o7m7\" data-start=\"1495\" data-end=\"1534\" data-is-last-node=\"\"\u003eBig End Pin Diameter: 16 x 9.5 x 38mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe ATHENA P5F0770187009B Top End Piston Kit is designed for Yamaha 250 WR-F and YZ-F models from 2016 through 2018. It provides a replacement piston kit for the engine’s top-end assembly.\u003c\/p\u003e\n\u003cp\u003eThis kit is identified by part number P5F0770187009B and is supplied as one unit. Its application-specific design supports straightforward parts identification when servicing a compatible Yamaha 250 WR-F or YZ-F engine.\u003c\/p\u003e\n\u003cp\u003eChoose the ATHENA Top End Piston Kit when replacing the piston in a 2016–2018 Yamaha 250 WR-F or YZ-F. Verify the vehicle application and part number before ordering to ensure the kit matches the intended service requirement.\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: P5F0770187009B\u003c\/li\u003e\n\u003cli\u003eProduct Type: Top end piston kit\u003c\/li\u003e\n\u003cli\u003eApplication: Yamaha 250 WR-F \/ YZ-F\u003c\/li\u003e\n\u003cli\u003eModel Years: 2016–2018\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":68128512278713,"sku":"227250","price":226.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/227250_1786049246.jpg?v=1793658288","url":"https:\/\/atticusgoods.com\/products\/athena-p5f0770187009b-top-end-piston-kit-for-yamaha-250-wr-f-yz-f-2016-2018","provider":"Atticus Goods","version":"1.0","type":"link"}