{"product_id":"allstar-performance-spark-plug-race-wire-set-under-header-w-o-sleeve","title":"Allstar Performance Under-Header 8mm Race Wire Set 90 Deg HEI — Fits Small Block Chevy","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Allstar Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eAllstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/6WByB9khrOw\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eUnder-Header Race Ignition Wires for SBC\u003c\/h2\u003e\u003cp\u003eDesigned for the serious racer, the Allstar Performance Under-Header Spark Plug Wire Set is the ultimate solution for Small Block Chevy engines where header clearance is at a premium. These 8mm spiral core wires are specifically configured to route underneath the headers, keeping the top of your engine bay clean and unobstructed while protecting your wires from extreme exhaust heat.\u003c\/p\u003e\u003ch3\u003eTechnical Advantages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder-Header Routing:\u003c\/strong\u003e Keeps wires away from the top of the engine for a clean, professional look.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8mm Spiral Core:\u003c\/strong\u003e Delivers superior spark energy with minimal electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHEI Terminals:\u003c\/strong\u003e Engineered for a secure fit with HEI-style ignition systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90-Degree Boots:\u003c\/strong\u003e Optimized for easy access and clearance in tight engine compartments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSBC Specific:\u003c\/strong\u003e Tailored for the geometry of Small Block Chevy cylinder heads.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn high-performance racing, heat management is critical. Routing your wires under the headers requires high-quality insulation and durable materials to prevent heat soak and wire degradation. This kit provides exactly that, ensuring consistent spark delivery even under the most extreme track conditions. The spiral core construction is specifically chosen for its ability to handle high-output ignition systems without compromising signal quality. By choosing this under-header set, you are investing in the longevity of your ignition system and the performance of your engine. Experience the difference that professional-grade components make in your racing setup. Shop the full range of performance ignition products at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Allstar Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/asphalt-tire-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Asphalt Tire Setup Log Book — 50 Sheet Pad\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/circle-track-set-up-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Circle Track Set-Up Book - Chassis Setup Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-8pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 8 Pack Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-40pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 40 Pack Bulk Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-spoon-24in-straight-w-round-end\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance 24in Straight Tire Spoon w\/ Round End — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Allstar Performance Under-Header 8mm Race Wire Set 90 Deg HEI \\u2014 Fits Small Block Chevy\",\"description\":\"Optimize your SBC ignition with the Allstar Performance Under-Header Race Wire Set. 8mm spiral core, HEI terminals. Order now for professional performance.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Allstar Performance\"},\"mpn\":\"ALL81365\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-spark-plug-race-wire-set-under-header-w-o-sleeve\",\"offers\":{\"@type\":\"Offer\",\"price\":\"99.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-spark-plug-race-wire-set-under-header-w-o-sleeve\",\"sku\":\"DNLF_ALL81365\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Exhaust\",\"item\":\"https:\/\/ggcracing.com\/collections\/exhaust\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Allstar Performance\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Allstar+Performance\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Allstar Performance Under-Header 8mm Race Wire Set 90 Deg HEI \\u2014 Fits Small Block Chevy\",\"item\":\"https:\/\/ggcracing.com\/products\/allstar-performance-spark-plug-race-wire-set-under-header-w-o-sleeve\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Allstar Performance Under-Header 8mm Race Wire Set 90 Deg HEI \\u2014 Fits Small Block fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Allstar Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Allstar Performance Under-Header 8mm Race Wire Set 90 Deg HEI \\u2014 Fits Small Block?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cat-back exhausts are bolt-on with basic hand tools \\u2014 most installs take 1-2 hours. No welding required.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41351356088404,"sku":"DNLF_ALL81365","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ALL81365.jpg?v=1719184273","url":"https:\/\/ggcracing.com\/en-co\/products\/allstar-performance-spark-plug-race-wire-set-under-header-w-o-sleeve","provider":"GGCRACING INC","version":"1.0","type":"link"}