Cat-Back System

This 2.75" diameter into dual 2" Cat-Back system has been tuned specifically for flow, performance, and sound for the 2.5L 4 cylinder engine in the K5 GT. The system features BORLA'S Polyphonic Harmonizer Technology that utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound to the BORLA mufflers. The mufflers then enhance this sound to the character and volume appropriate for this system. The system delivers the sporty S-Type sound without any drone in the cabin. The exhaust exits thru dual 4" round black chrome on T-304 stainless steel tips on each muffler assembly. Using BORLA Stainless Steel Polish p# 21499 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. A system is also available with bright chrome on T-304 stainless steel tips. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Each Borla Exhaust System is built from premium T-304 series stainless steel to give you the absolute best in performance and durability. We strive to provide you with the highest quality products and stand behind our systems with a Million-Mile Warranty.System Features:

Additional Information

S-Type Cat-Back Exhaust System '25-'26 KIA K5 GT 2.5L 4 CYL Automatic Transmission Front Wheel Drive.

Application Summary

2025 KIA K5 GT 2.5L 4 CYL Automatic Transmission Front Wheel Drive.

Part Type

Exhaust System Kit

• Features Polyphonic Harmonizer technology

Important Notice relating to US Domestic Market Trucks & Pickups

Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.

Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.

Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information