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Borla Atak Rear Section 15-17 Ford Mustang 2.3L EcoBoost MT/AT 2.25in pipe 4in tip

SKU: BOR11890

Exhaust Systems

BOR Cat Back ATAK...

Borla Atak Rear Section 15-17 Ford Mustang 2.3L EcoBoost MT/AT 2.25in pipe 4in tip

SKU: BOR11890

Exhaust Systems

BOR Cat Back ATAK...

A$1,822.02
IN STOCK! Est Ship 3-5 days. In stock at 1 location (4 available)

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Description

ExhstSysKt

This is Borlas® complete Cat-Back © system including X pipe and ATAK mufflers for the Camaro SS equipped with factory ground effects. BORLA® has developed a revolutionary new exhaust technology that enables our engineers to deliver unprecedented vehicle-specific control over the acoustical note of an exhaust throughout the RPM range, while retaining 100 of the power-adding capabilities of BORLAs patented multicore design

Additional Information

ATAK Axle-Back Exhaust System 2015-2023 Ford Mustang 2.3L 4 Cyl.. EcoBoost/ 2015-2017 3.7L V6, Automatic/ Manual Transmission Rear Wheel Drive 2 Door EXCEPT Convertible and Active Exhaust Systems (4 tips).

Application Summary

2015-2023 Ford Mustang 2.3L 4 Cyl.. EcoBoost/ 2015-2017 3.7L V6, Automatic/ Manual Transmission Rear Wheel Drive 2 Door EXCEPT Convertible and Active Exhaust Systems (4 tips).

Part Type

Exhaust System Kit

Product Overview

BORLA has announced the development of a revolutionary new exhaust technology that enables their engineers to deliver unprecedented vehicle-specific control over the acoustical note of an exhaust throughout the RPM range, while retaining 100% of the power-adding capabilities of BORLA's patented Multicore design.

Called ATAK (Acoustically-Tuned Applied Kinetics), this exclusive technology (U.S. patent #5,248,859) produces the highest available dB (decibel) levels in the BORLA street-legal lineup, and is designed for high-performance purists who prefer exhaust notes over their stereos. The focus of ATAK is to pump the volume while retaining clarity of sound, at the same time avoiding the drone and distortion typically found in louder exhausts. With ATAK, the sound output is tuned like a graphic equalizer to shape and focus sound waves for optimum high-volume output.

The development of each ATAK system begins with extensive study of each vehicle's acoustical properties. The technology is based on custom-tuned attributes of the internal muffler cores, which are calibrated on a vehicle-by-vehicle basis to deliver the most desirable sound. BORLA is now shipping Cat-Back and/or Rear Section ATAK exhaust systems for a wide variety of popular applications.

Like all BORLA exhaust products, each system is handmade in the USA by master craftspeople and features premium 300-Series austenitic stainless steel construction, mandrel bending by computer-controlled CNC machinery to ensure maximum flow and a perfect fit, mirror-polished tips, and a Million-Mile Warranty

Additional Application Notes
• T-304 Stainless Steel 2.25 in.; Incl. Mufflers//Hardware/4 in. Single Round Rolled Angle-Cut Tip; Single Split Rear Exit;50 State Legal / California Emissions Compliant 2.25 in. Tubing; Incl. Mufflers//Hardware/4 in. Single Round Rolled Angle-Cut Tip; Single Split Rear Exit;
• 2.25 in. Tubing; Incl. Mufflers//Hardware/4 in. Single Round Rolled Angle-Cut Tip; Single Split Rear Exit;
• Coupe; 2.25 in. Tubing; Incl. Mufflers//Hardware/4 in. Single Round Rolled Angle-Cut Tip; Single Split Rear Exit;

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-09 01:07:22

Features

  • EXCEPT Convertible models and vehicles with Active Valve Exhaust System (4 tips)

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.

Specifications

Product Details

Construction:All Welded
Description:ATAK; Rear Section
Exhaust Type:Axle-Back System
Exit Position:Split Rear
Exit Style:Single Split Rear Exit
Grade Type:Performance
Inlet Inside Diameter:4.000 in.
Inlet Size (in.):4
Material:T-304 Stainless Steel
Muffler Type:Straight-Through
Off Road Use Only:No
Outlet Outside Diameter:4.000 in.
Outlet Size (in.):4
Part Number:bor11890
System Type:Axle Back
Tail Pipe Diameter:2.250 in.
Tail Pipe Material:Stainless Steel
Tip / Outlet Finish:Bright Chrome On T-304 Stainless Steel
Tip Diameter:4 in.
Tip Size:4.0in
Title Extended:Mustang 2.3L EcoBoost/ 3.7L V6 2015-2020 Axle-Back Exhaust System ATAK Part # 11890
Title:2015-2021 Ford Mustang 2.3L EcoBoost/ 3.7L V6 Axle-Back Exhaust System ATAK
Tubing Diameter:2.250 in.

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:22:14

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Borla, Borla Exhaust
StreetFX SKU bor11890
SFX Item ID 4225241
Accounting SKU bor-11890
Manufacturer SKU 11890
Manufacturer UPC 808422118903
Alternative References 11890, BOR-11890

Exhaust System, ATAK, Rear Section, Dual, Stainless Steel, Natural, Split Rear Exit, Ford, 2.3L, Kit

Installed behind the rear axle, Borla ATAK axle-back exhaust systems replace the factory rear muffler(s) and exhaust pipe(s). Following the same exhaust path and secured using the original hangers and rubber isolators, Borla axle-back (rear section) performance exhausts are less restrictive than factory exhaust systems. Welded tips are standard on most systems.

ATAK (Acoustically Tuned Applied Kinetics) technology is designed for high-performance purists who prefer exhaust sound over their stereos. ATAK-equipped exhaust systems deliver the highest available dB (decibel) levels in the Borla street-legal lineup. Unlike inferior brands that lose significant sound quality at higher volumes, ATAK systems are tuned like a graphic equalizer to shape and focus sound waves for optimum high-volume output. They are calibrated on a vehicle-by-vehicle basis and their specifically-tuned internal muffler cores deliver the most desirable sound.

Many vehicles have a factory service-point in the exhaust system (flange or slip-fit) located in the exhaust tubing behind the rear axle; so most Borla ATAK axle-back installations are completed in less than an hour with no cutting of the factory system. Vehicles that don't have a factory service-point require cutting, so Borla includes easy-to-follow instructions and hardware to complete the installation.

Borla pioneered the use of aircraft-grade 304 stainless steel tubing, a material with a higher content of carbon and nickel that won't rust or corrode, for the automotive exhaust aftermarket … including Borla ATAK axle-back exhaust systems with the power of race-winning Borla Multicore technology.

Product Attributes
UPC808422118903
BrandBorla
NotesDoes not fit convertible models or models with active exhaust systems.
Tip CutSlant
QuantitySold as a kit.
Part TypeExhaust Systems
Tip ShapeRound
Tip FinishPolished
Exhaust TypeDual
Product LineBorla ATAK Axle-Back Exhaust Systems
System StyleRear axle-back
Tip IncludedYes
Tip Material304 stainless steel
Tip Quantity2
Exit LocationSplit rear
Muffler StyleTurbo
System FinishNatural
Inlet Quantity2
Muffler FinishNatural
Tip Edge StyleRolled edge
System Material304 stainless steel
Muffler IncludedYes
Muffler Material304 stainless steel
Muffler QuantityTwo
Hardware IncludedYes
Special AttentionIt is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.
Muffler ConfigurationSingle inlet/Single outlet
Tip Outlet Size (in.)4.00
Tailpipe Diameter (in.)2.25 in.
Manufacturer's Part Number11890
Catalytic Converter(s) IncludedNo
Intermediate Pipe Diameter (in.)2.25 in.

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