{"product_id":"hks-super-fire-racing-m525re-rotary-spark-plug-10-pack","title":"HKS Super Fire Racing M525RE Iridium Spark Plug (NGK 10.5, Rotary) - 10 Pack","description":"\u003cp\u003eThe HKS Super Fire Racing M525RE is an RE-type iridium spark plug with an NGK 10.5 equivalent heat range, designed specifically for rotary engines (Mazda 13B \/ RX-7 \/ RX-8). The RE design uses a straight platinum outer electrode tailored to the rotary combustion cycle for reliable ignition, paired with a 0.6 mm iridium center electrode. The very cold heat range suits high-boost and high-RPM rotary builds. Sold as a 10-pack (wholesale case); a typical rotary needs multiple plugs (leading\/trailing per rotor).\u003c\/p\u003e\u003ch2 style=\"margin:16px 0 4px 0;\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin-top:0;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003eHKS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eProduct Line\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003eSuper Fire Racing M-Series (RE rotary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eHeat Range\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003eNGK 10.5 equivalent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eSeat \/ Type\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003eRE type (rotary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eThread\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003eφ14 x 21.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eHex (Wrench)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003e20.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eCenter Electrode\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003e0.6 mm iridium (straight platinum outer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;font-weight:600;width:38%;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border-bottom:1px solid #e5e5e5;\"\u003eRotary engines (Mazda 13B \/ RX-7 \/ RX-8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;font-weight:600;width:38%;\"\u003eQuantity\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e10 plugs (case)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":44293331976364,"sku":"HKS50003-M525RE","price":38.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0480\/2160\/2467\/files\/0b13086fb0b087dc5df87f9e927ac5b8_4acc492e-290d-49a5-a697-87b1ea7f6171.jpg?v=1744769223","url":"https:\/\/onefastshop.com\/products\/hks-super-fire-racing-m525re-rotary-spark-plug-10-pack","provider":"OneFastShop","version":"1.0","type":"link"}