{"product_id":"ngk-racing-r6725-11-competition-spark-plug-13b-20b","title":"NGK Racing R6725-11 Competition Spark Plug – 13B \/ 20B","description":"\u003cp\u003e\u003cstrong\u003eNGK R6725-11 Racing Competition Spark Plug\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eNGK R6725-11\u003c\/strong\u003e is a specialist Racing Competition spark plug designed for engines operating under extreme temperatures, cylinder pressures and sustained high loads.\u003c\/p\u003e\n\u003cp\u003eRACING SPECIFICATION\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNGK Racing Competition series\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHeat Range: 11\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCentre electrode: \u003cstrong\u003ePlatinum\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGround electrode: \u003cstrong\u003ePlatinum\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSolid terminal\u003c\/li\u003e\n\u003cli\u003eNGK Stock Number: \u003cstrong\u003e4311\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned for competition \/ highly tuned engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRSG – JAPAN SOURCED\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs with all NGK spark plugs supplied by RSG, we specifically source our competition plugs from \u003cstrong\u003eJapan\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAPPLICATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSuitable for appropriately specified applications including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e13B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e13B-REW\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e20B\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eHigh-boost engines\u003c\/li\u003e\n\u003cli\u003eHigh-power builds\u003c\/li\u003e\n\u003cli\u003eDrag applications\u003c\/li\u003e\n\u003cli\u003eCircuit \/ race engines\u003c\/li\u003e\n\u003cli\u003eOther competition applications requiring an NGK heat range 11 plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIMPORTANT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eR6725-11 is a competition spark plug\u003c\/strong\u003e, not a standard replacement plug.\u003c\/p\u003e\n\u003cp\u003eA colder heat range is not automatically better. Plug selection should be based on engine specification, power level, boost, fuel and intended use.\u003c\/p\u003e\n\u003cp\u003eFor primarily street-driven engines, an excessively cold competition plug can be more prone to fouling during low-load operation. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContact RSG if you are unsure which competition plug is appropriate for your engine.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-family: HelveticaNeueW01-65Medi, HelveticaNeueW02-65Medi, HelveticaNeueW10-65Medi, sans-serif;\"\u003eWorldwide Shipping Available.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":58731669586304,"sku":"NGK-RX7-IGN-R6725-11-4311-JP","price":55.68,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1013\/2573\/4272\/files\/IMG_20250304_093607.jpg?v=1787572759","url":"https:\/\/rotarysecretgarage.com\/products\/ngk-racing-r6725-11-competition-spark-plug-13b-20b","provider":"Rotary Secret Garage","version":"1.0","type":"link"}