Borla 11991 S-Type Axle-Back Exhaust System

The Borla 11991 S-Type Axle-Back Exhaust System delivers an aggressive, sporty exhaust note with superior performance for the 2025 Kia K4. Engineered specifically for EX, LX, and LXS trims equipped with the 2.0L 4-cylinder engine and automatic transmission, this exhaust system replaces the restrictive factory exhaust from the rear axle back.

Key Features:

• S-Type sound level provides a moderate to aggressive tone that's perfect for enthusiasts seeking enhanced exhaust presence
• Precision-engineered mandrel-bent tubing maximizes exhaust flow and reduces backpressure for improved performance
• Premium T-304 stainless steel construction resists corrosion and ensures long-lasting durability
• Direct bolt-on installation designed specifically for 2025 Kia K4 front-wheel drive sedans
• Includes all necessary hardware for complete axle-back replacement
• Backed by Borla's Million-Mile Warranty for unmatched quality assurance

Borla's patented straight-through muffler design delivers increased horsepower and torque while maintaining optimal exhaust scavenging. This system transforms your K4's exhaust note from subdued to commanding without introducing unwanted drone during highway cruising. Made in the USA with Borla's legendary craftsmanship and attention to detail.