{"product_id":"borla-11991-s-type-axle-back-exhaust-system-for-2025-kia-k4-2-0l","title":"Borla 11991 S-Type Axle-Back Exhaust System for 2025 Kia K4 2.0L","description":"The BORLA® R\u0026amp;D Team has developed an awesome sounding exhaust for your Kia K4. Our 2.25\" diameter Axle-Back™ system is specifically tuned for the 2.0L engine. The S-Type system delivers a sound that is much sportier than stock, yet still refined and far from obnoxious. Not to mention, a drone-free driving experience for comfort during cruising speeds. The exhaust exits thru a 2.25\" brushed T-304 stainless steel turn down spout with a laser cut BORLA® logo. BORLA® Cat-Back™ \u0026amp; Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA® Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium, high-quality T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum a flow \u0026amp; power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Bolt-on a BORLA® and get the sound to match your Kia's Performance. Each BORLA® Exhaust System is built from premium T-304 austenitic stainless steel to give you the absolute best in performance and durability. Best of all, BORLA® stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.\nS-Type Axle-Back Exhaust System 2025 Kia K4 EX\/ LX\/ LXS 2.0L 4 Cyl. Automatic Transmission Front Wheel Drive 4 Door Sedan.\n2025 Kia K4 EX\/ LX\/ LXS 2.0L 4 Cyl. Automatic Transmission Front Wheel Drive 4 Door Sedan.\n\u003cul\u003e\n  \u003cli\u003eTurn down tip muffler assembly features a laser cut BORLA® logo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your 2025 Kia K4 with the Borla 11991 S-Type Axle-Back Exhaust System, engineered specifically for 2.0L four-cylinder models with automatic transmission, front-wheel drive, and a four-door sedan body. This system produces a sportier exhaust note than the factory setup while maintaining a refined, drone-free driving experience during highway cruising.\u003c\/p\u003e\u003cp\u003eThe 2.25-inch exhaust system uses premium T-304 austenitic stainless steel for long-term corrosion resistance, performance, and durability. Its straight-through and multi-core technology is designed to improve exhaust flow and velocity, helping support responsive performance and the distinctive Borla Sound of Power. Smooth mandrel bends and precision CNC manufacturing promote consistent airflow and an accurate fit.\u003c\/p\u003e\u003cp\u003eThe exhaust exits through a 2.25-inch brushed T-304 stainless steel turndown tip featuring a laser-cut Borla logo. The bolt-on design is tailored to the Kia K4 application for a straightforward installation using the vehicle’s existing exhaust layout. Like other Borla exhaust systems, part number 11991 is backed by Borla’s Million-Mile Warranty for added ownership confidence.\u003c\/p\u003e\u003ch3\u003eBrief Description\u003c\/h3\u003e\u003cp\u003eA refined, performance-oriented S-Type axle-back exhaust system for the 2025 Kia K4 2.0L sedan.\u003c\/p\u003e\u003ch3\u003eKey Product Specifications \u0026amp; Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Borla\u003c\/li\u003e\n\u003cli\u003ePart Number: 11991\u003c\/li\u003e\n\u003cli\u003eSystem Type: S-Type Axle-Back Exhaust\u003c\/li\u003e\n\u003cli\u003eApplication: 2025 Kia K4\u003c\/li\u003e\n\u003cli\u003eEngine: 2.0L four-cylinder\u003c\/li\u003e\n\u003cli\u003eTransmission: Automatic\u003c\/li\u003e\n\u003cli\u003eDrive Configuration: Front-wheel drive\u003c\/li\u003e\n\u003cli\u003eMaterial: T-304 austenitic stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAxle-back exhaust system\u003c\/li\u003e\n\u003cli\u003eBrushed stainless steel turndown tip\u003c\/li\u003e\n\u003cli\u003eLaser-cut Borla logo tip detail\u003c\/li\u003e\n\u003cli\u003eInstallation components required for the application\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Fits 2025 Kia K4 EX, LX, and LXS models equipped with the 2.0L engine, automatic transmission, front-wheel drive, and four-door sedan body. Verify vehicle configuration before ordering.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSportier, refined sound: Borla S-Type tuning delivers a more aggressive exhaust note than stock without an excessively loud character.\u003c\/li\u003e\n\u003cli\u003eDrone-free cruising: Tuned for comfortable highway driving and reduced unwanted interior resonance.\u003c\/li\u003e\n\u003cli\u003eHigh-flow construction: Patented straight-through and multi-core technology promotes increased exhaust velocity and efficient flow.\u003c\/li\u003e\n\u003cli\u003ePremium stainless steel durability: T-304 austenitic stainless steel construction resists corrosion and supports long-term performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2025 Kia K4 EX\u003cbr\u003e\n2025 Kia K4 LX\u003cbr\u003e\n2025 Kia K4 LXS\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Borla","offers":[{"title":"Default Title","offer_id":67597905887484,"sku":"11991","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/f44fda926befcad8c62ab8b6ff1e54fdL.png?v=1790581853","url":"https:\/\/diycustoms.store\/products\/borla-11991-s-type-axle-back-exhaust-system-for-2025-kia-k4-2-0l","provider":"diycustoms.store","version":"1.0","type":"link"}