{"product_id":"tomei-valve-guide-set-rb25-rb20-for-nissan-skyline-r32-r33-ta309a-ns06a","title":"Tomei Valve Guide Set RB25\/RB20 TA309A-NS06A","description":"\u003cp dir=\"auto\"\u003eHigh-output and high-RPM RB20 and RB25 engines place increased thermal and mechanical demands on the valvetrain. The Tomei Valve Guide Set (part number TA309A-NS06A) is a complete intake and exhaust set manufactured from phosphor bronze and designed for Nissan RB25DE(T) and RB20DE(T) engines, including NEO variants.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePhosphor bronze (a copper-tin-phosphorus alloy) provides excellent tensile strength combined with superior heat-transfer properties. These characteristics help the guides dissipate heat more effectively and maintain more consistent operating clearances under elevated temperatures. The material also offers lower friction than many conventional guides, reducing stress on the valvetrain and helping to minimize wear, seizure risk, and related issues when higher-lift camshafts or increased spring pressures are used.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis set is a logical upgrade during any serious cylinder head rebuild or performance valvetrain assembly on RB20 and RB25 engines. At Terra Firma Automotive, we supply this genuine Tomei Phosphor Bronze Valve Guide Set as a proven component for builders who need reliable geometry and durability. Whether the engine is being prepared for higher boost, higher RPM, or a refreshed performance head, these guides deliver the thermal and wear advantages associated with Tomei. Choose Terra Firma Automotive for authentic Japanese valvetrain components that support durable RB20 and RB25 cylinder heads.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Tomei Valve Guide Set\u003c\/li\u003e\n\u003cli\u003ePart Number: TA309A-NS06A\u003c\/li\u003e\n\u003cli\u003eApplication: Nissan RB25DE(T) and RB20DE(T)\u003c\/li\u003e\n\u003cli\u003eIncludes NEO variants\u003c\/li\u003e\n\u003cli\u003eComplete intake and exhaust set\u003c\/li\u003e\n\u003cli\u003eMaterial: Phosphor bronze (Cu-Sn-P alloy)\u003c\/li\u003e\n\u003cli\u003eSuperior heat transfer characteristics\u003c\/li\u003e\n\u003cli\u003eLower friction than many standard guides\u003c\/li\u003e\n\u003cli\u003eHelps maintain consistent valve clearances\u003c\/li\u003e\n\u003cli\u003eReduces valvetrain stress and wear\u003c\/li\u003e\n\u003cli\u003eImproved resistance to seizure under high load\u003c\/li\u003e\n\u003cli\u003eSuitable for high-RPM and high-power builds\u003c\/li\u003e\n\u003cli\u003eIdeal for performance cylinder head rebuilds\u003c\/li\u003e\n\u003cli\u003eTrusted Japanese valvetrain engineering\u003c\/li\u003e\n\u003cli\u003eAvailable from Terra Firma Automotive\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":18356672659518,"sku":"TA309A-NS06A","price":432.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1992\/7247\/files\/TA309A-NS06A.jpg?v=1728583877","url":"https:\/\/tfaspeed.com\/products\/tomei-valve-guide-set-rb25-rb20-for-nissan-skyline-r32-r33-ta309a-ns06a","provider":"Terra Firma Automotive","version":"1.0","type":"link"}