{"product_id":"drt-cylinder-head-dome-insert-yamaha-yz250x-1999","title":"DRT Cylinder Head Dome Insert ONLY YAMAHA YZ250(X) 1999+","description":"\u003cp\u003eDRT Cylinder Head Dome Insert Yamaha YZ250(X) 1999+\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eDRT cylinder heads are the cutting edge of cylinder head design, offering optimized performance for every riding style. Proudly designed and manufactured in the United States!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eBenefits compared to stock:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e-Optimized performance: more power where you need it, when you need it\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e-Choose between 3 dome insert options. Order one, two, or all 3 to unlock full control over the feel of your engine. Each dome offers very different power delivery characteristics!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e-Increased detonation resistance: more efficient combustion gains performance while also increasing reliability\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e-Better cooling: targeted heat removal where it’s most needed, giving further reliability gains\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e-Cleaner, more consistent jetting\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e-Reduced fuel consumption\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eDomes A through C are safe to run on 91+ octane (AKI) pump fuel. While each dome varies in\u003cspan class=\"Apple-converted-space\"\u003e  \u003c\/span\u003ecompression ratio, they each have chamber geometry optimized for specific power delivery profiles. Please refer to the descriptions below to decide what will best suit you and your riding!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eDome A (low compression):\u003c\/strong\u003e\u003c\/span\u003e Mellow but very luggable low end with a linear feeling transition into a free-revving top end. The most friendly to ride but not lacking in torque or response. Great for beginner riders but plenty of fun for experienced riders too! Offers great control of traction in slick conditions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eDome B (mid compression):\u003c\/strong\u003e\u003c\/span\u003e Luggable low end with a quick ramp into strong top end pull. Slight torque increase with quicker revving and harder hitting power band compared to dome A. Classic “250 2 stroke” feel! For the rider that likes some spice when they get on the pipe!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eDome C (high compression):\u003c\/strong\u003e\u003c\/span\u003e Hard hitting and luggable low end with a broad mid range. Offers the most low end torque and peak power. Snappy and \"connected with throttle\" feeling power . Yeah, this one pulls hard!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFitment:\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eYAMAHA YZ250 1999+\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003eYAMAHA YZ250X 2016+\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e \u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cem\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(249, 1, 1); text-decoration: underline;\"\u003eDRT and BeRAD Products strongly recommend hiring professional help for installation. \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cem\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(249, 1, 1); text-decoration: underline;\"\u003eDRT and BeRAD Products are not responsible for any injury or damages resulting from use or installation of this product.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eReturn Policy: Returns of unused and undamaged items will be accepted within 30 days of the shipping date. When items are returned and inspected, a refund will be submitted, less the cost of shipping and a 20% restocking fee.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1056\/5310\/files\/Screenshot_2025-11-28_at_11.04.16_AM.png?v=1764345867\"\u003e\u003c\/p\u003e","brand":"DRT","offers":[{"title":"Default Title","offer_id":42045828300903,"sku":null,"price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/5310\/files\/DRT-HD768-R1-DOME-C.png?v=1766651606","url":"https:\/\/berad-products.myshopify.com\/products\/drt-cylinder-head-dome-insert-yamaha-yz250x-1999","provider":"BeRAD Moto","version":"1.0","type":"link"}