{"product_id":"spdz1-k-series-megaphone-header-downpipe-12-15-civic-si-fg-13-15-acura-ilx-cast-bellmouth","title":"SPDZ1 K Series Megaphone Header Downpipe 12-15 Civic Si FG \u0026 13-15 Acura ILX Cast Bellmouth","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eSPDZ1 K-Series Performance Header Downpipe for 2012–2015 Honda Civic Si \u0026amp; 2013–2015 Acura ILX K24\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUnleash the full power of your K-Series engine with the SPDZ1 Performance Header Downpipe — the ultimate bolt-on upgrade for your 9th Gen Civic Si or Acura ILX K24. Designed for enthusiasts who demand more than just an OEM replacement, this downpipe is engineered to increase horsepower, improve throttle response, and deliver a raw, aggressive exhaust note — all while maintaining perfect fitment and durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKey Benefits:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBig Gains, No Compromises: Unlock real horsepower and torque increases by eliminating factory restrictions and optimizing exhaust flow.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision-Built Performance: Crafted from premium 304 stainless steel with mandrel-bent tubing and CNC-machined flanges for maximum durability and a perfect, leak-free seal.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOEM-Style Fitment, Race-Proven Function: Features a cast 4” bellmouth collector with 3” outlet, designed to bolt directly to your factory or aftermarket cat-back system — no modifications required.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDaily Driven, Track Ready: Whether you’re carving corners on the weekend or commuting daily, the integrated flex pipe absorbs vibration and movement, preventing stress on your exhaust system.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSensor-Ready Out of the Box: Comes with both O2 sensor and wideband sensor bungs pre-installed for easy tuning and monitoring.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMegaphone Header Design: Enhances exhaust scavenging and improves mid-to-high RPM power for a more exhilarating driving experience.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhat’s Included:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1x SPDZ1 K-Series Header Downpipe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e3-Bolt Exhaust Gasket \u0026amp; Hardware Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePre-installed O2 \u0026amp; Wideband Sensor Ports\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegrated Flex Section for Longevity\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eVehicle Compatibility:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2012–2015 Honda Civic Si (FG4)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2013–2015 Acura ILX K24\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhy Choose SPDZ1?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSPDZ1 is committed to pushing the boundaries of performance. Our products are developed in partnership with top-level tuners and tested under real-world and track conditions. Every SPDZ1 part is backed by our passion for motorsport, quality, and customer satisfaction.\u003c\/span\u003e\u003c\/p\u003e","brand":"Speedzone Performance LLC","offers":[{"title":"Default Title","offer_id":51224618074407,"sku":"SPDZ1-SZY-176","price":275.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/primestore.us\/es\/products\/spdz1-k-series-megaphone-header-downpipe-12-15-civic-si-fg-13-15-acura-ilx-cast-bellmouth","provider":"PrimeStore Premium Marketplace ","version":"1.0","type":"link"}