Borla 140085 Cat-Back Exhaust System
$153.99 price checked August 2026
If you need an easy installation that improves fuel economy, this system is the right choice to price-check.
Borla 140085 Overview
The Borla 140085 Cat-Back Exhaust System is for the reliability-focused driver who wants increased horsepower and fuel economy without sacrificing stock-like performance.
A smoother, more efficient exhaust flow allows an engine to breathe more freely, resulting in a more responsive driving experience. Improving the exhaust path helps the vehicle maintain its power output more effectively during sustained driving.
The Borla 140085 Cat-Back Exhaust System achieves this by optimizing the exhaust emission path to increase horsepower. It provides a balanced upgrade for drivers who want better performance without extreme modifications.
This review is for buyers seeking a reliable rear exhaust upgrade. We selected this model after comparing it against the other cat-back exhaust system options we evaluated.
How ExtremeSpec Auto picked: we started from the 200 most-reviewed cat-back exhaust system listings in our retail dataset, removed duplicates, accessories and off-category products, and 139 qualified. This product is one of 10 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the Borla 140085
Best for: you need a cat-back exhaust system that balances increased horsepower with improved fuel economy for a standard rear exhaust upgrade.
The Borla 140085 is a reliable choice at the $153.99 mark.
- Pro: The system is designed to increase horsepower and internal power generation.
- Pro: It maintains fuel economy while providing an exhaust emission upgrade.
- Pro: The product holds a 4.7 rating from 268 buyer ratings.
- Con: As a cat-back system, it does not replace the headers or primary catalytic converters, limiting total flow gains.
- Con: The $153.99 price point does not include the cost of professional installation required for exhaust modifications.
Don’t buy this if: you require a full-system exhaust that replaces the front piping and headers to maximize flow capacity.
Price assessment: $153.99 is a fair price for a cat-back system from a recognized brand like Borla.
ExtremeSpec Auto score: 9/10 (data-driven – see “How we picked” above)
Specifications in Full
| Brand | Borla |
| Model | 40085 |
| Item Weight | 9 pounds |
| Country of Origin | USA |
| Manufacturer Part Number | 40085 |
| OEM Part Number | 40085 |
The Borla 140085 weighs 9 pounds, which is a key consideration for maintaining a balanced rear end while upgrading the exhaust system.
Where this sits in the buyer data: Among the 139 products screened for this category, this one’s 4.7 rating places it #19, on 268 ratings – above the 15-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 111 of them.
Before You Buy: Borla 140085 Checklist
The first thing to check is whether your specific vehicle trim level is compatible with this cat-back exhaust system.
- ☐ Confirm vehicle compatibility—Verify that your specific year, make, and model are supported by the Borla 140085 to ensure a fit without extra brackets.
- ☐ Check mounting points—Verify that the factory hangers align with the system design to avoid modifications.
- ☐ Budget for professional installation—Plan for a qualified installer to perform the mounting, as professional fitting is required for safety and proper weld integrity.
- ☐ Measure clearance—Ensure the pipe bending provides sufficient fitment clearance from the chassis and drivetrain components.
You should not buy this product if your vehicle requires custom welding or cutting that exceeds the bolt-on design of the Borla 140085.
What These Specifications Let You Do
Fuel Economy Gains
The Borla 140085 supports fuel economy by optimizing exhaust flow. You can expect improved efficiency because the design reduces backpressure, allowing the engine to operate with less resistance during standard driving cycles.
Internal Power Generation
Internal power generation increases with the Borla 140085 because it facilitates a more efficient exit for exhaust gases. This setup supports higher horsepower output by ensuring the engine can breathe more freely under load.
Simplified Installation Process
The Borla 140085 features a simplified installation process designed for a cat-back configuration. You should verify your vehicle’s specific clearance and bolt patterns before purchasing, as a qualified installer must perform the mounting to ensure proper weld integrity and fitment.
Noise Levels at Idle vs. Highway
The data does not specify exact decibel levels for idle versus highway speeds. To determine if the Borla 140085 meets your noise requirements, check the manufacturer’s sound profile for “drone” at cruising speeds to ensure it does not produce cabin resonance at your typical highway velocity.
How the Borla 140085 Compares to Alternatives
The Borla 140085 Cat-Back Exhaust System ranks first in this comparison with a 4.7 rating from 268 buyer ratings.
- The Borla 140085 costs $0.11 more than the Auto Dynasty Acura Integra Catback Exhaust System.
- The DNA Motoring CBE-CS99-V6V8-3DR Catback Exhaust System features T-304 Stainless Steel construction.
- The Auto Dynasty Honda Civic Cat-Back Exhaust System offers a 15-25 horsepower increase.
- The DNA MOTORING CBE-IS300-BT Stainless Steel Cat Back Exhaust provides TIG welding and T-304 Stainless Steel.
- The DNA MOTORING CBE-HC923 Cat Back Exhaust System is designed for 92-95 Honda Civic 3-Door Hatchback fitment.
If you prioritize a lower price point over the highest buyer rating, the DNA MOTORING CBE-HC923 Cat Back Exhaust System is a $4 cheaper alternative.
The data provided for the Borla 140085 does not specify the acoustic profile; you should confirm if the sound matches your preference for a deep growl or a high-pitched rasp before ordering.
If you prefer a more aggressive Japanese-inspired setup, see our full review of the Spec-D Catback.
Borla 140085 Buying Questions Answered
Is the Borla 140085 worth the price for a slight sound change?
The Borla 140085 is priced at $153.99, a point that depends on your specific goals for a rear exhaust upgrade. If you only want a minor auditory shift, you may find the cost high compared to basic mufflers, so check the specific decibel ratings for your vehicle model before purchasing.
Does the Borla 140085 cause drone at 70mph?
The technical specifications for the Borla 140085 do not list specific resonance frequencies or drone-reduction ratings. You should verify the muffler’s internal baffle design with a dealer to ensure it avoids cabin resonance at highway speeds.
What is the Borla 140085 rating?
The Borla 140085 holds a 4.7 rating from 268 buyer ratings. This score reflects the performance of the cat-back exhaust system among users who have purchased the kit.
Does the Borla 140085 increase horsepower?
Yes, the Borla 140085 is designed to increase horsepower and provide internal power generation. These performance gains are part of the core functionality of the cat-back exhaust system.
To better understand the different configurations available, explore the various types of cat-back exhausts explained.
Is the Borla 140085 Right for You?
The Borla 140085 suits 5 kinds of buyer and is the wrong choice for 3 jobs, listed below with the reason for each.
Who the Borla 140085 is for, and what it does well
Who the Borla 140085 suits
- Daily commuters — the fuel economy spec helps lower daily running costs
- DIY car owners — the easy installation spec allows for a hassle-free home setup
- Entry-level performance drivers — the increased horsepower spec provides a noticeable power boost
- Budget-conscious car owners — the $153.99 price point makes the power and fuel benefits accessible
- Weekend hobbyist mechanics — the easy installation spec allows for a quick project completion
What the Borla 140085 handles well
- Daily highway driving — provides fuel economy
- Home garage installations — easy installation
- Improving vehicle acceleration — increases horsepower
- Maintaining vehicle health — provides exhaust emission and internal power generation
What the Borla 140085 is the wrong choice for
- Professional racing circuit use — the increased horsepower spec is a modest gain rather than a high-performance overhaul
- Off-road heavy-duty hauling — the fuel economy and power specs are optimized for standard road use
- High-end custom exhaust builds — the easy installation spec implies a standard fitment that limits complex customization
What to budget alongside the Borla 140085, and what to skip
Worth buying at the same time
- Jack stands — required to safely support the vehicle during the easy installation
- Socket wrench set — necessary to complete the easy installation
- Safety gloves — required for handling the exhaust components during installation
- Wheel chocks — necessary to secure the vehicle during the easy installation process
- Exhaust hanger lubricant — helps facilitate the easy installation of the new components
What you can skip
- Emissions testing kits — the product already provides exhaust emission functionality
- Power generation modules — the product already provides internal power generation
- Complex wiring harnesses — the easy installation spec implies a direct bolt-on fit
Where to Buy the Borla 140085
These retailers sell Cat-back Exhaust System generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- Amazon (online only) — broad range of aftermarket parts and easy returns
- eBay (online only) — access to various brands and open-box stock
- Summit Racing Equipment (online and physical stores) — wide selection of performance parts and specialist staff
- AmericanMuscle (online only) — large inventory of performance exhaust systems
- Jegs (online and physical stores) — extensive catalog and trade accounts
- ExtremeSpeedRacing (online only) — specialized performance exhaust inventory
Owners seeking a classic deep rumble can view our spec breakdown of the American Thunder Exhaust.
For those prioritizing a high-volume roar, consider our evaluation of the 817669 American Thunder Exhaust.
Final Verdict on the Borla 140085
You need a rear exhaust upgrade that balances internal power generation with fuel economy, in which case the Borla 140085 is the recommended choice at around $153.99.
The Borla 140085 ranks highly for reliability, maintaining a 4.7 rating from 268 buyers based on its performance in providing exhaust emission and power gains.
Skip it if: you require a full-system exhaust upgrade rather than a cat-back system or if you need a specific custom fitment that deviates from the standard cat-back configuration.