{"product_id":"nissan-s14-s15-silvia-sr20det-notchtop-cylinder-head-bare","title":"Nissan S14 S15 Silvia SR20DET NotchTop Cylinder Head (Bare)","description":"\u003cp\u003eThis Nissan SR20DET \"Notchtop\" Bare Cylinder Head is the foundational component for an S14 or S15 Silvia engine build. Since this is a \"bare\" head, it is designed for builders who plan to install their own valvetrain, such as aftermarket cams, springs, and retainers.\u003c\/p\u003e\n\u003cp\u003e​Product Overview\u003c\/p\u003e\n\u003cp\u003e​Engine Compatibility: Specifically for the SR20DET Notchtop found in the Nissan Silvia S14 and S15.\u003c\/p\u003e\n\u003cp\u003e​Condition: Bare cylinder head (no valves, springs, or cams included).\u003c\/p\u003e\n\u003cp\u003e​Key Design Feature: The \"Notchtop\" design includes the characteristic notch in the casting to accommodate the Variable Cam Timing (VCT) system found on later SR20DET models, which provides better mid-range torque compared to the earlier \"Redtop\" or \"Blacktop\" S13 engines.\u003c\/p\u003e\n\u003cp\u003e​Technical Specifications \u0026amp; Benefits\u003c\/p\u003e\n\u003cp\u003e​High-Flow Potential: The Notchtop head is often preferred for its improved port geometry and factory VCT support.\u003c\/p\u003e\n\u003cp\u003e​Customization Ready: Ideal for high-horsepower builds where factory valvetrain components would otherwise be discarded for performance upgrades (e.g., Tomei, GSC, or Brian Crower components).\u003c\/p\u003e\n\u003cp\u003e​Authenticity: Sourced as a genuine Nissan\/Nismo component, ensuring factory-spec tolerances for deck flatness and port alignment.\u003c\/p\u003e","brand":"NizmoPartsPlug","offers":[{"title":"Default Title","offer_id":49885858922773,"sku":"11040-69F00 FLORIDA LOCATION PRICE","price":1590.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0136\/3850\/0452\/files\/1777150501477.png?v=1777150926","url":"https:\/\/nizmopartsplug.com\/es\/products\/nissan-s14-s15-silvia-sr20det-notchtop-cylinder-head-bare","provider":"NizmoPartsPlug","version":"1.0","type":"link"}