{"product_id":"athena-p5f0770039007b-top-end-piston-kit-for-yamaha-250-wr-f-yz-f-2008-2013","title":"ATHENA P5F0770039007B Top End Piston Kit for Yamaha 250 WR-F \/ YZ-F 2008–2013","description":"\u003cp data-start=\"0\" data-end=\"621\" class=\"PDq2pG_selectionAnchorContainer\"\u003eBreathe new life into your 4-stroke enduro engine with Athena's Forged Top End Piston Kit. Built for riders who push their machines to the limit, this complete rebuild kit combines a precision-forged piston with Athena's premium top-end gasket kit to deliver race-proven durability and reliable performance. Manufactured using a reverse extrusion forging process and precision CNC machining, the piston offers exceptional strength, superior heat resistance, and consistent power delivery, while premium Japanese piston rings and Athena's advanced gasket technology ensure outstanding sealing and long-lasting reliability.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul data-start=\"623\" data-end=\"1147\"\u003e\n\u003cli data-section-id=\"1uhg29p\" data-start=\"623\" data-end=\"711\"\u003eComplete top-end rebuild kit featuring a forged 4-stroke piston and premium gasket set\u003c\/li\u003e\n\u003cli data-section-id=\"11izpqf\" data-start=\"712\" data-end=\"790\"\u003eReverse-extruded forged aluminum piston for superior strength and durability\u003c\/li\u003e\n\u003cli data-section-id=\"c3p98c\" data-start=\"791\" data-end=\"862\"\u003ePrecision CNC-machined for OEM-quality fit and dependable performance\u003c\/li\u003e\n\u003cli data-section-id=\"xpzjlk\" data-start=\"863\" data-end=\"962\"\u003ePremium Japanese piston rings with wear-resistant coatings reduce friction and extend engine life\u003c\/li\u003e\n\u003cli data-section-id=\"16iawf3\" data-start=\"963\" data-end=\"1047\"\u003eForged side relief skirt design promotes smoother operation and improved longevity\u003c\/li\u003e\n\u003cli data-section-id=\"juvkfv\" data-start=\"1048\" data-end=\"1147\"\u003eAdvanced gasket materials provide dependable, leak-free sealing under demanding riding conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-start=\"1149\" data-end=\"1162\"\u003e\u003cstrong data-start=\"1149\" data-end=\"1162\"\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul data-start=\"1164\" data-end=\"1273\"\u003e\n\u003cli data-section-id=\"16n0mx3\" data-start=\"1164\" data-end=\"1188\"\u003eForged 4-Stroke Piston\u003c\/li\u003e\n\u003cli data-section-id=\"1houatg\" data-start=\"1189\" data-end=\"1207\"\u003ePiston Rings (3)\u003c\/li\u003e\n\u003cli data-section-id=\"6aqmvn\" data-start=\"1208\" data-end=\"1232\"\u003ePiston Pin \/ Wrist Pin\u003c\/li\u003e\n\u003cli data-section-id=\"6wg6ph\" data-start=\"1233\" data-end=\"1243\"\u003eCirclips\u003c\/li\u003e\n\u003cli data-section-id=\"1j4tvgc\" data-start=\"1244\" data-end=\"1273\"\u003eComplete Top End Gasket Kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-start=\"1275\" data-end=\"1292\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul data-start=\"1294\" data-end=\"1544\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1ust6eh\" data-start=\"1294\" data-end=\"1316\"\u003ePiston Size: 76.97mm\u003c\/li\u003e\n\u003cli data-section-id=\"1ejhbhu\" data-start=\"1317\" data-end=\"1338\"\u003eDisplacement: 250cc\u003c\/li\u003e\n\u003cli data-section-id=\"1dex8rz\" data-start=\"1339\" data-end=\"1366\"\u003eCompression Ratio: 13.5:1\u003c\/li\u003e\n\u003cli data-section-id=\"8zn354\" data-start=\"1367\" data-end=\"1388\"\u003ePiston Type: Forged\u003c\/li\u003e\n\u003cli data-section-id=\"21k081\" data-start=\"1389\" data-end=\"1417\"\u003eEngine Application: Enduro\u003c\/li\u003e\n\u003cli data-section-id=\"1qyo7ls\" data-start=\"1418\" data-end=\"1452\"\u003eSkirt Design: Forged Side Relief\u003c\/li\u003e\n\u003cli data-section-id=\"1frzqmm\" data-start=\"1453\" data-end=\"1482\"\u003eCompression Height: 22.30mm\u003c\/li\u003e\n\u003cli data-section-id=\"afyesh\" data-start=\"1483\" data-end=\"1505\"\u003ePiston Pin: Standard\u003c\/li\u003e\n\u003cli data-section-id=\"1ga46yp\" data-start=\"1506\" data-end=\"1544\" data-is-last-node=\"\"\u003eBig End Pin Diameter: 16 x 10 x 42mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe ATHENA P5F0770039007B Top End Piston Kit is designed for Yamaha 250 WR-F and YZ-F models from 2008 through 2013. It provides a replacement piston kit for the top-end assembly of the listed applications.\u003c\/p\u003e\n\u003cp\u003eThis kit is identified by ATHENA part number P5F0770039007B and is sold as one unit. Verify the vehicle model and model year before ordering to help ensure the part matches the intended application.\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: P5F0770039007B\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: 2008–2013\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":68128520569017,"sku":"227245","price":226.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/227245_1786043233.jpg?v=1793658311","url":"https:\/\/atticusgoods.com\/products\/athena-p5f0770039007b-top-end-piston-kit-for-yamaha-250-wr-f-yz-f-2008-2013","provider":"Atticus Goods","version":"1.0","type":"link"}