Borla 140359 S-Type Cat-Back Exhaust System for 2025–2026 Kia K5 2.5L

The BORLA® R&D Team has developed an awesome sounding exhaust for your Kia K5. Our 2.25" diameter Cat-Back™ system is specifically tuned for the K5's 2.5L 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 2.25" brushed T-304 stainless steel turn down tips. Tips NOT included reuse Original Equipment (O.E.) valance tips. BORLA® Cat-Back™ & 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 & 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. 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. Cat-Back Exhaust System - S-Type 2025-2026 Kia K5 LXS/ EX/ GT-LINE 2.5L 4 Cyl. Automatic Transmission Front Wheel Drive 4 Door. 2025-2026 Kia K5 LXS/ EX/ GT-LINE 2.5L 4 Cyl. Automatic Transmission Front Wheel Drive 4 Door.

• Tips NOT included reuse O.E. valance tips

Upgrade the sound and performance of your 2025–2026 Kia K5 with the Borla 140359 S-Type Cat-Back Exhaust System. Developed specifically for K5 LXS, EX, and GT-Line models with the 2.5L four-cylinder engine, automatic transmission, front-wheel drive, and four-door body configuration, this system delivers a sportier exhaust note than the factory setup while maintaining a refined, comfortable character.

The S-Type system is engineered for a drone-free driving experience during highway cruising and exits through brushed T-304 stainless steel turn-down tips designed to reuse the original equipment valance tips. Tips are not included. Borla’s patented straight-through and multi-core technology helps improve exhaust flow and velocity, supporting responsive performance, driving enjoyment, and the distinctive Borla Sound of Power.

Constructed from premium T-304 austenitic stainless steel, the Borla 140359 provides excellent durability and corrosion resistance compared with lower-grade stainless materials. Ultra-smooth mandrel bends help maintain consistent airflow, while precision CNC manufacturing supports an accurate bolt-on fit. This cat-back exhaust system is backed by Borla’s Million-Mile Warranty. Professional installation is recommended. This product may require emissions-related acknowledgement; verify applicable federal, state, and local regulations before installation.

Brief Description

S-Type Cat-Back Exhaust System for select 2025–2026 Kia K5 2.5L models, featuring refined aggressive sound, efficient exhaust flow, premium stainless-steel construction, and a direct-fit design.

Key Product Specifications & Technical Data

• Brand: Borla
• Part Number: 140359
• Exhaust Type: Cat-Back
• Sound Level: S-Type
• Vehicle Application: 2025–2026 Kia K5
• Engine Application: 2.5L four-cylinder
• Material: T-304 austenitic stainless steel
• Outlet Configuration: Brushed turn-down tips; reuse original equipment valance tips

What’s Included in the Box

• Borla S-Type Cat-Back Exhaust System
• Installation hardware as supplied by the manufacturer
• Installation instructions

Fitment

Fits 2025–2026 Kia K5 LXS, EX, and GT-Line models equipped with the 2.5L four-cylinder engine, automatic transmission, front-wheel drive, and four-door body configuration. Exhaust tips are not included; reuse the original equipment valance tips.

Features:

• Sport-Tuned S-Type Sound: Delivers a noticeably sportier exhaust tone than stock while remaining refined and suitable for everyday driving.
• Drone-Free Cruising: Engineered to minimize unwanted cabin drone for greater comfort at highway and cruising speeds.
• Premium T-304 Stainless Steel: Uses durable, corrosion-resistant austenitic stainless steel for long-term performance and reliability.
• High-Flow Direct-Fit Design: Patented straight-through and multi-core technology, mandrel-bent tubing, and CNC manufacturing support efficient airflow and accurate installation.

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Units Per Sku: 1
Regular Stock: t