{"product_id":"tsp-cnc-head-insert-yamaha-yz-250-yz-250x","title":"TSP CNC Head Insert - Yamaha YZ 250\/YZ 250X","description":"\u003cp\u003eThe TSP CNC Head Insert - Yamaha YZ 250\/YZ 250X  features an improved combustion chamber design that gives more performance throughout the rev range as well as reduced risk of detonation. It has been designed and tested to work with 91 octane fuel. All TSP head inserts also include a complete head gasket kit.\u003c\/p\u003e\n\u003csection class=\"elementor-section elementor-top-section elementor-element elementor-element-25cf90a4 woocommerce woocommerce-shop-single elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"25cf90a4\" data-element_type=\"section\"\u003e\n\u003cdiv class=\"elementor-container elementor-column-gap-default\"\u003e\n\u003cdiv class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-644b72b2\" data-id=\"644b72b2\" data-element_type=\"column\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-6ec35de0 elementor-widget elementor-widget-woocommerce-product-data-tabs\" data-id=\"6ec35de0\" data-element_type=\"widget\" data-widget_type=\"woocommerce-product-data-tabs.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003ch3\u003eTSP CNC Head Insert – Yamaha YZ 250\/YZ 250X\u003c\/h3\u003e\n\u003cp\u003e** If your model head is the older two piece design, this will not fit. This only fits our\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003enew design head as seen here\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e**\u003c\/p\u003e\n\u003cp\u003eThis listing is for the insert only, it does not include the head!\u003c\/p\u003e\n\u003cp\u003eThis is the listing to buy additional compression inserts to suit your TSP YZ 250 head from 1999 to current models with the removable compression insert design. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003enew head\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewas designed for the intention to easily change the head inserts to suit different riding situations, while offering them at a cost effective price.\u003c\/p\u003e\n\u003cp\u003eThis insert will come with the inner o-ring required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLOW COMPRESSION: YZ250X ONLY:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThis Low comp design is the same comp ratio as the stock 250X model head but with a much better design. It gives much better bottom\/mid and much better part throttle response. It is the design we normally suggest for the X model at sea level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMEDIUM COMPRESSION:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThis Med design is the same as we have been selling for the standard MX model for years. It is actually lower compression than stock but gives much better throttle response and smoother, crisper power delivery. It is suited the the standard YZ250 model at sea level and for high level MX where the engine is revved hard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHIGH COMPRESSION:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThis new design is roughly the same compression ratio as the stock YZ250 head but with a much better design. It gives much more bottom\/mid power than stock, plus higher peak power. It doesn’t rev out as far as the Medium design. It is best suited to trail-riding, off-road racing and MX where the rider wants max bottom\/mid.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"TSP","offers":[{"title":"Low Compression","offer_id":46680937464053,"sku":"P.I.YA250.99on.15.L","price":155.0,"currency_code":"USD","in_stock":true},{"title":"Medium Compression","offer_id":46680937496821,"sku":"P.I.YA250.99on.15.M","price":155.0,"currency_code":"USD","in_stock":true},{"title":"High Compression","offer_id":46680937431285,"sku":"P.I.YA250.99on.15.H","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/2782\/files\/tsp-cnc-head-insert-yamaha-yz-250yz-250x-27361459.jpg?v=1751153876","url":"https:\/\/mojomotosport.com\/products\/tsp-cnc-head-insert-yamaha-yz-250-yz-250x","provider":"MojoMotoSport.com","version":"1.0","type":"link"}