{"id":17903,"date":"2025-05-28T19:22:50","date_gmt":"2025-05-28T16:22:50","guid":{"rendered":"https:\/\/www.mwsteel.eu\/?post_type=product&#038;p=17903"},"modified":"2026-09-18T13:52:39","modified_gmt":"2026-09-18T10:52:39","slug":"hks-spark-plugs-m45-re-m50-re-m525-re","status":"publish","type":"product","link":"https:\/\/www.mwsteel.eu\/en\/product\/hks-spark-plugs-m45-re-m50-re-m525-re\/","title":{"rendered":"HKS Spark Plugs M45-RE, M50-RE, M525-RE"},"content":{"rendered":"<p>We offer a full selection of HKS Super Fire Racing family of spark plugs optimized for race and tuning applications, featuring reinforced ignition capabilities, durability and anti-insulation.<\/p>\n<p>The thermal edge of the ceramic insulator discharges to help decrease carbon deposits under long idling.<\/p>\n<p>Their iridium alloy center electrode reduces voltage requirements and improves ignition performance and durability.<\/p>\n<p>Heat ranges are designed to withstand high temperatures and pressures under demanding race conditions.<\/p>\n<p>The HKS M-RE series spark plugs are almost exclusively designed for and used in:<\/p>\n<p>Mazda RX-7 (all generations, particularly FC3S and FD3S)<\/p>\n<p>Mazda RX-8<\/p>\n<p>The chart below illustrates the respective Denso and NGK heat range indexes.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-17801\" src=\"https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko-325x57.jpg\" alt=\"\" width=\"501\" height=\"88\" srcset=\"https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko-325x57.jpg 325w, https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko-600x104.jpg 600w, https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko.jpg 707w\" sizes=\"(max-width: 501px) 100vw, 501px\" \/><\/p>\n<p>Choose the best option from the drop down menu.<\/p>\n","protected":false},"excerpt":{"rendered":"<h4>Technical specifications<\/h4>\n<ul>\n<li>HKS M-RE-series features a short M14 x 12,7 thread and a plug wrench size 20,8 mm \/ 13\/16&quot;.<\/li>\n<li><strong>It offers three heat ranges:<\/strong> 45 (NGK 9), 50 (NGK 10) and 52.5 (NGK 10.5).<\/li>\n<\/ul>\n","protected":false},"featured_media":17804,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[1046],"product_tag":[],"class_list":["post-17903","product","type-product","status-publish","has-post-thumbnail","product_cat-spark-plugs","pa_tuotteet-hks-en","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product\/17903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/comments?post=17903"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/media\/17804"}],"wp:attachment":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/media?parent=17903"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product_brand?post=17903"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product_cat?post=17903"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product_tag?post=17903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}