{"product_id":"cylinder-works-cylinder-head-yamaha-yz125-2005-2021","title":"Cylinder Works Cylinder Head – Yamaha YZ125 (2005–2021)","description":"\u003ch1 data-start=\"393\" data-end=\"489\"\u003eCylinder Works Standard Bore Cylinder Head – Yamaha YZ125 (2005–2021) (0930-0205 \/ CH2005-K01)\u003c\/h1\u003e\n\u003ch2 data-start=\"491\" data-end=\"507\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-start=\"508\" data-end=\"963\"\u003eReplace your worn or damaged OEM head with the \u003cstrong data-start=\"555\" data-end=\"612\"\u003eCylinder Works CH2005-K01 Standard Bore Cylinder Head\u003c\/strong\u003e, precision-machined in the USA for \u003cstrong data-start=\"648\" data-end=\"676\"\u003eYamaha YZ125 (2005–2021)\u003c\/strong\u003e.\u003cbr data-start=\"677\" data-end=\"680\"\u003eThis lightweight aluminum head is designed to \u003cstrong data-start=\"726\" data-end=\"789\"\u003erestore factory-level compression and combustion efficiency\u003c\/strong\u003e while maintaining OEM port geometry for reliable performance and easy jetting. Perfect for full rebuilds, top-end refreshes, or pairing with a new cylinder and piston kit.\u003c\/p\u003e\n\u003ch2 data-start=\"965\" data-end=\"985\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp data-start=\"986\" data-end=\"1228\"\u003e✅ Complete standard-bore cylinder head (ready to install)\u003cbr data-start=\"1043\" data-end=\"1046\"\u003e✅ Machined aluminum construction with OEM port shape\u003cbr data-start=\"1098\" data-end=\"1101\"\u003e✅ Pre-chambered dome for stock compression and smooth throttle response\u003cbr data-start=\"1172\" data-end=\"1175\"\u003e✅ Direct bolt-on fit for all 2005–2021 YZ125 models\u003c\/p\u003e\n\u003cp data-start=\"1230\" data-end=\"1300\"\u003e\u003cem data-start=\"1230\" data-end=\"1300\"\u003e(No valves, guides, or lifters – this part is for 2-stroke engines.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"1302\" data-end=\"1314\"\u003eFitment\u003c\/h2\u003e\n\u003cp data-start=\"1315\" data-end=\"1325\"\u003e📦 Fits:\u003c\/p\u003e\n\u003cul data-start=\"1326\" data-end=\"1352\"\u003e\n\u003cli data-start=\"1326\" data-end=\"1352\"\u003e\n\u003cp data-start=\"1328\" data-end=\"1352\"\u003e2005–2021 Yamaha YZ125\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1354\" data-end=\"1371\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"1372\" data-end=\"1649\"\u003e\n\u003cli data-start=\"1372\" data-end=\"1435\"\u003e\n\u003cp data-start=\"1374\" data-end=\"1435\"\u003ePrecision-machined in the USA for consistent chamber volume\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1436\" data-end=\"1496\"\u003e\n\u003cp data-start=\"1438\" data-end=\"1496\"\u003eRestores stock compression and powerband characteristics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1497\" data-end=\"1547\"\u003e\n\u003cp data-start=\"1499\" data-end=\"1547\"\u003eOEM-equivalent port shape for reliable jetting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1548\" data-end=\"1590\"\u003e\n\u003cp data-start=\"1550\" data-end=\"1590\"\u003eLightweight cast-aluminum construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1591\" data-end=\"1649\"\u003e\n\u003cp data-start=\"1593\" data-end=\"1649\"\u003eDirect bolt-on fit for OEM or Cylinder Works cylinders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1651\" data-end=\"1669\"\u003eWarranty Info\u003c\/h2\u003e\n\u003cp data-start=\"1670\" data-end=\"1791\"\u003eManufactured by \u003cstrong data-start=\"1686\" data-end=\"1708\"\u003eCylinder Works USA\u003c\/strong\u003e.\u003cbr data-start=\"1709\" data-end=\"1712\"\u003eWarranty and technical support are handled directly through the manufacturer.\u003c\/p\u003e\n\u003ch2 data-start=\"1793\" data-end=\"1809\"\u003ePrice \u0026amp; SKU\u003c\/h2\u003e\n\u003cp data-start=\"1810\" data-end=\"1955\"\u003e💲 \u003cstrong data-start=\"1813\" data-end=\"1830\"\u003eRetail Price:\u003c\/strong\u003e $134.95\u003cbr data-start=\"1838\" data-end=\"1841\"\u003e\u003cstrong data-start=\"1841\" data-end=\"1849\"\u003eSKU:\u003c\/strong\u003e 0930-0205 \/ CH2005-K01\u003cbr data-start=\"1872\" data-end=\"1875\"\u003e\u003cstrong data-start=\"1875\" data-end=\"1905\"\u003eEstimated Shipping Weight:\u003c\/strong\u003e 0.75 lb\u003cbr data-start=\"1913\" data-end=\"1916\"\u003e\u003cstrong data-start=\"1916\" data-end=\"1929\"\u003eHandling:\u003c\/strong\u003e Ships next business day\u003c\/p\u003e","brand":"Parts Unlimited","offers":[{"title":"Default Title","offer_id":47413892088033,"sku":"0930-0205","price":145.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1219\/2993\/files\/cylinder-works-cylinder-head-yamaha-yz125-20052021-1612507.jpg?v=1763566226","url":"https:\/\/dunegoonshop.com\/products\/cylinder-works-cylinder-head-yamaha-yz125-2005-2021","provider":"Dune Goons","version":"1.0","type":"link"}