Borla S-Type Cat-Back Exhaust System with 3.5-Inch Polished Tips (140595) - 2015-2021 Subaru WRX & WRX STI
Wake up the high-performance spirit of your car with the high-impact Borla S-Type Cat-Back Exhaust System. Custom-engineered for 2015 to 2021 Subaru Impreza WRX and WRX STI models, this premium full-length exhaust upgrade introduces Borla's legendary acoustic profile: the classic S-Type sound level. Formulated explicitly for driving enthusiasts and performance purists who crave an aggressive, sport-tuned exhaust note under acceleration, this system is calibrated to bring out the distinctive Subaru Boxer engine rumble. This configuration delivers a commanding exterior acoustic presence while relying on advanced straight-through internals backed by Borla's official No-Drone Guarantee to keep the cabin completely comfortable and drone-free during highway cruising, daily driving, or spirited track runs.
The internal engineering of the Borla 140595 targets key factory flow restrictions by incorporating an upgraded high-efficiency performance layout featuring a massive 3-inch inlet diameter that transitions smoothly into dual 2.25-inch split pipes leading into the mufflers. This performance architecture utilizes ultra-smooth mandrel-bent performance tubing and patented multi-core internal geometry that maximizes exhaust velocity and optimizes scavenging to unlock hidden horsepower, sharper throttle response, and enhanced fuel economy across the entire powerband. Designed to route flawlessly along the undercarriage, it leaves plenty of extra clearance and is tailored exclusively to match the specific 4-door sedan body style. Built completely from premium-grade, aircraft-quality T-304 austenitic stainless steel, this highly durable cat-back assembly defends permanently against structural degradation, intense under-car heat cycling, and severe corrosion. The spent exhaust gases exit through a distinctive dual split rear exit configuration finished with quad (2 per muffler) 3.5-inch round, rolled edge angle-cut bright chrome polished T-304 stainless steel tips. Precision CNC-manufactured for an accurate line-to-line direct bolt-on fitment, this system utilizes all factory mounting positions and requires absolute zero cutting or modifications for a straightforward installation, all backed by Borla's legendary lifetime Million-Mile Warranty.
Chassis & Configuration Notes: This performance cat-back system is engineered specifically for All-Wheel Drive (AWD) 4-door sedan models. It is fully compatible with both the 2.0L Turbo 4-cylinder engine found in the WRX and the 2.5L Turbo 4-cylinder engine found in the WRX STI, supporting both automatic and manual transmission configurations.
Features
- Classic S-Type Acoustic Profile: Formulated to bring out the signature Boxer rumble under load with a highly controlled cabin presence
- Step-Down Flow Management: Features a 3-inch piping architecture that splits into dual 2.25-inch paths to maximize exhaust velocity and turbo response
- Handmade in the USA: Proudly crafted by master craftspeople using premium domestic construction methods
- Patented Multi-Core Tech: High-efficiency straight-through internal geometry completely removes restrictive factory flow boundaries
- Borla No-Drone Guarantee: Advanced acoustic engineering ensures an upgraded exterior note with absolute zero cab resonance or highway humming
- Constructed completely from premium-grade T-304 austenitic stainless steel for permanent structural integrity and ultimate rust resistance
- Premium Styling: Finished with an eye-catching quad setup of 3.5-inch round, rolled edge angle-cut bright chrome polished T-304 stainless steel tips
- Direct Bolt-On Fitment: Precision computer-numerical control (CNC) manufacturing ensures an accurate layout that requires no cutting
- Backed by Borla's unmatched, industry-leading written Million-Mile Warranty
Detailed Vehicle Fitment Breakdown
Compatible Model Years & Body Styles:
This performance exhaust system is compatible with the following sedan configurations under the specific chassis, drivetrain, and engine parameters detailed below:
- 2015 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
- 2016 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
- 2017 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
- 2018 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
- 2019 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
- 2020 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
- 2021 Subaru WRX / WRX STI (2.0L / 2.5L Turbo) - AWD Sedan 4-Door
Drivetrain & Layout Compatibility Details:
Fits the Turbo 4-cylinder performance cars listed above across these exact build parameters:
- Engine Configurations: 2.0L FA20F Turbo / 2.5L EJ257 Turbo 4-Cylinder
- Body Style Requirement: 4-Door Sedan Models Only
- Drivetrain Layout: Subaru Symmetrical All-Wheel Drive (AWD)
- Transmission Compatibility: Compatible with Manual and Automatic (CVT) options
- Installation Style: Direct Bolt-On (No cutting required)
Important Application Notes:
- **Dual-Engine Calibrated Engineering:** Optimized to provide proper backpressure and sound tuning for both the twin-scroll 2.0L WRX layout and the unequal-length header 2.5L STI layout.
- **Premium Materials:** Built entirely with authentic T-304 stainless steel to deliver superior rust resistance over lower-grade T-400 series choices.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
