When selecting an unequal length header for your Subaru BRZ, the main considerations are performance gains, build quality, and sound characteristics. The Best Overall pick offers a balanced combination of durability and power, while options like the Tomei High-Flow Manifold cater to enthusiasts seeking maximum flow efficiency. Some headers prioritize sound enhancement, but may compromise on ease of install or longevity. Buyers often face tradeoffs between price, performance, and installation complexity. Keep reading for a detailed breakdown of the best options, so you can choose the one that best fits your driving goals.
Complete the kit
Key Takeaways
- The top-ranked headers excel in durability and performance improvements for the Subaru BRZ.
- Unequal length designs generally offer a more aggressive sound compared to equal length headers.
- Pricing varies widely, with premium options providing better materials and longer lifespan.
- Installation difficulty can differ; some headers require more extensive modifications.
- The best choice depends on whether the focus is on sound, power, or budget.
| Stainless Steel FA20 Header for WRX with 3.0″ OD Precision Turbo V-band |  | Best for Precision Fit and Durable Construction | Material: Stainless 304L Billet | Thickness: 1.25 inches | FA20 Bolt Diameter: M10 x 1.50mm | VIEW ON AMAZON | See Our Full Breakdown |
| IAG Performance Equal Length Header (ELH) for Subaru WRX 2015-2021 FA20 DIT |  | Best for Power Gains and Reduced Ringland Risk | Material: 304 stainless steel | Inner Diameter: 45mm (1.77 inch) | Turbo flange size: 42mm (1.65 inch) | VIEW ON AMAZON | See Our Full Breakdown |
| Tomei Exhaust Manifold Kit for 2015+ Subaru WRX FA20DIT – High-Flow SUS304 Unequal Length Manifold with Titan Exhaust Bandage |  | Best for Exhaust Flow and Throttle Response Enhancement | Application: 2015+ Subaru WRX FA20DIT | Design: Unequal Length Header | Material: SUS304 Stainless Steel | VIEW ON AMAZON | See Our Full Breakdown |
| Tomei Exhaust Manifold Kit for Subaru WRX/STI EJ20/25 – High-Flow SUS304, Unequal Length, Single Scroll Turbo |  | Best for High-Flow and Compatibility with EJ Series | Design: 4-1 unequal length | Material: SUS304 stainless steel | Compatibility: EJ20/25 engines, WRX/STI | VIEW ON AMAZON | See Our Full Breakdown |
| Borla Headers for Subaru WRX, WRX STI, Legacy GT 2001-2011 (Part #17217) |  | Best for Classic Subaru Performance Upgrades | Model Compatibility: WRX, WRX STI, Legacy GT 2001-2011 | Part Number: 17217 | VIEW ON AMAZON | See Our Full Breakdown | |
| MAPerformance Stainless Steel Turbo Manifold Head Flange Set for Subaru EJ25 |  | Best for Custom Fabrication on EJ25 Engines | Material: 304 Stainless Steel | Thickness: 1/2 inch | Port Size: 1.75 inch | VIEW ON AMAZON | See Our Full Breakdown |
| Tomei Exhaust Manifold Kit for WRX/STI EJ20/25 – Equal Length SUS304 Performance Manifold with Titan Exhaust Bandage |  | Best for Performance and Heat Management | Design: 4-1 equal length | Material: SUS304 stainless steel | Includes: exhaust manifold, heat bandage, gaskets, hardware | VIEW ON AMAZON | See Our Full Breakdown |
| Compatible with Subaru WRX STI Equal Length Header by Prosport |  | Best for DIY Enthusiasts and Professional Installers | Application: Subaru WRX STI | Type: Equal Length Header | Material: Automotive-grade materials | VIEW ON AMAZON | See Our Full Breakdown |
| unequallength header subaru brz | Material |
|---|---|
| Stainless Steel FA20 Header fo | Stainless 304L Billet |
| IAG Performance Equal Length H | 304 stainless steel |
| Tomei Exhaust Manifold Kit for | SUS304 Stainless Steel |
| Tomei Exhaust Manifold Kit for | SUS304 stainless steel |
| Borla Headers for Subaru WRX | — |
| MAPerformance Stainless Steel | 304 Stainless Steel |
| Tomei Exhaust Manifold Kit for | SUS304 stainless steel |
| Compatible with Subaru WRX STI | Automotive-grade materials |
More Details on Our Top Picks
Stainless Steel FA20 Header for WRX with 3.0″ OD Precision Turbo V-band
This stainless steel header stands out for its high-quality 304L billet stainless steel construction, ensuring durability and resistance to corrosion. Compared to the others, its precise fitment for the FA20DIT engine makes installation more straightforward for those with technical skills, though it lacks detailed instructions. Its 3.00-inch V-band connection offers a secure, leak-free attachment, critical for turbocharged setups. While it excels in durability and fit, it requires advanced installation knowledge and may not be compatible with non-WRX models, limiting versatility. This pick makes the most sense for experienced enthusiasts seeking a robust, exact-fit upgrade for their WRX’s turbo system.
Pros:- Durable stainless steel construction for long-term reliability
- Precise fitment for FA20DIT engines in WRX models
- High-quality V-band connection for secure attachment
Cons:- Requires advanced installation skills and tools
- No detailed installation instructions included
Best for: Advanced DIYers or professional mechanics upgrading a WRX with FA20DIT for durability and precision fit.
Not ideal for: Casual hobbyists or owners of non-WRX Subaru models, due to limited compatibility and installation complexity.
- Material:Stainless 304L Billet
- Thickness:1.25 inches
- FA20 Bolt Diameter:M10 x 1.50mm
- Inlet Port Shape:Divided Twin Ports
- Vband OD:3.00 inches
- Vband ID:2.04 inches
- Firing Ring OD:2.25 inches
Our verdict“This header suits experienced installers demanding durability and a perfect fit for WRX FA20DIT engines.”
IAG Performance Equal Length Header (ELH) for Subaru WRX 2015-2021 FA20 DIT
This IAG Performance ELH enhances airflow significantly over OEM headers, making it a strong choice for those seeking increased power and efficiency. Compared with the Tomei unequal length manifolds, it emphasizes ease of installation with included hardware and a straightforward design, though it may not optimize exhaust flow as much as a high-end aftermarket kit. Its stainless steel build and focus on reducing cylinder temperatures can help decrease ringland failure risk, making it ideal for high-performance applications. However, installation can be moderate in difficulty, requiring some mechanical skill, and it’s designed specifically for certain Subaru WRX models, which could limit its applicability. This option suits drivers wanting a reliable, performance-oriented upgrade with better airflow and engine cooling.
Pros:- Enhances airflow for more power and efficiency
- Constructed from durable stainless steel
- Includes complete hardware for easy installation
- Reduces cylinder temperatures to prevent ringland failure
Cons:- Installation may require moderate mechanical skills
- Designed specifically for certain Subaru WRX models
Best for: Performance-oriented owners of 2015-2021 Subaru WRX FA20 DIT models seeking improved airflow and durability.
Not ideal for: Casual drivers or owners of incompatible Subaru models, since it’s tailored specifically for certain WRX years and needs some mechanical skill to install.
- Material:304 stainless steel
- Inner Diameter:45mm (1.77 inch)
- Turbo flange size:42mm (1.65 inch)
- Compatibility:Subaru WRX 2015-2021 FA20 DIT
- Installation time:3-4 hours
Our verdict“This header is ideal for enthusiasts wanting to boost power while improving engine reliability in their WRX.”
Tomei Exhaust Manifold Kit for 2015+ Subaru WRX FA20DIT – High-Flow SUS304 Unequal Length Manifold with Titan Exhaust Bandage
This Tomei kit offers an unequal length design aimed at improving exhaust flow and throttle response for 2015+ WRX models. Unlike the simpler IAG ELH, its high-flow SUS304 stainless steel construction and thermal wrap provide better heat management, which can translate into increased responsiveness and torque. The inclusion of a Titan Exhaust Bandage and comprehensive hardware makes installation more straightforward, though professional help may still be advisable for optimal results. The increased noise levels and potential for higher exhaust sound could be a concern for daily drivers. This kit is best suited for those looking to maximize exhaust flow and throttle responsiveness at the cost of some additional complexity and noise.
Pros:- Improves exhaust flow and throttle response
- Durable SUS304 stainless steel
- Includes thermal wrap for heat control
- Complete bolt-on kit for easy installation
Cons:- May require professional installation for best results
- Potentially increased noise levels
Best for: Experienced tuners or enthusiasts aiming for maximum exhaust flow and throttle response in 2015+ WRX with a focus on heat management.
Not ideal for: Casual owners or daily drivers sensitive to increased noise and requiring straightforward installation without professional help.
- Application:2015+ Subaru WRX FA20DIT
- Design:Unequal Length Header
- Material:SUS304 Stainless Steel
- Includes:Titan Exhaust Bandage, gaskets, bolts
Our verdict“This kit suits performance enthusiasts seeking maximum exhaust efficiency and heat management in their WRX.”
Tomei Exhaust Manifold Kit for Subaru WRX/STI EJ20/25 – High-Flow SUS304, Unequal Length, Single Scroll Turbo
This Tomei manifold offers a 4-1 unequal length design optimized for WRX and STI EJ20/25 engines, providing improved exhaust flow and throttle response. Its SUS304 stainless steel construction ensures durability and rust resistance, while the included components like the Titan Exhaust Bandage and hardware simplify installation. Compared with the FA20-specific options, this kit caters to older EJ series engines, making it versatile across a range of Subaru models. The tradeoff involves more complex installation and a higher cost for high-performance parts. This manifold fits well for owners seeking a reliable upgrade for EJ series engines, especially for those upgrading turbo setups.
Pros:- Improves exhaust flow and responsiveness
- Durable SUS304 stainless steel construction
- Includes comprehensive installation kit
- Suitable for a range of Subaru EJ engines
Cons:- Installation may require technical skill
- Higher cost compared to simpler headers
Best for: Owners of Subaru WRX/STI with EJ20/25 engines wanting a robust, high-flow manifold compatible with older models.
Not ideal for: Owners of FA20DIT models or those seeking an easier, plug-and-play upgrade, due to the complexity and specific engine design.
- Design:4-1 unequal length
- Material:SUS304 stainless steel
- Compatibility:EJ20/25 engines, WRX/STI
- Included:exhaust manifold, support pipe, gaskets, hardware, Titan Bandage
Our verdict“This manifold is best for EJ engine owners seeking a durable, high-flow upgrade with proven performance gains.”
Borla Headers for Subaru WRX, WRX STI, Legacy GT 2001-2011 (Part #17217)
This Borla header set targets older Subaru models, including WRX, STI, and Legacy GT from 2001-2011, emphasizing a broad compatibility with high-performance gains. Compared to modern, model-specific options like the Tomei or IAG headers, Borla’s design focuses on durability and ease of installation for a wide range of vehicles, though it may not maximize flow efficiency as a purpose-built, newer header. Its robust construction and proven track record make it a reliable choice for owners of these vintage models wanting a simple upgrade. However, the older design may not provide the same level of flow optimization as newer, specialized headers, and installation could still require professional assistance.
Pros:- Enhances engine power and efficiency
- Durable construction with high-quality materials
- Broad compatibility with older Subaru models
Cons:- Installation may require professional help
- Limited to specific older Subaru models, less versatile for newer vehicles
Best for: Owners of Subaru WRX, STI, or Legacy GT from 2001-2011 seeking a durable, straightforward upgrade to improve power.
Not ideal for: Owners of newer Subaru models or those seeking the latest high-performance header technology, due to age and design limitations.
- Model Compatibility:WRX, WRX STI, Legacy GT 2001-2011
- Part Number:17217
Our verdict“This header provides a reliable upgrade for older Subaru owners aiming for better power with straightforward installation.”
MAPerformance Stainless Steel Turbo Manifold Head Flange Set for Subaru EJ25
This set of stainless steel flanges is ideal for enthusiasts who want to craft their own exhaust headers or turbo manifolds for Subaru EJ25 engines. Made from durable 1/2-inch thick 304 stainless steel, it offers a cost-effective alternative to buying complete pre-made manifolds like the Tomei kit. While it provides excellent material quality and optimized port sizes for improved airflow, it’s limited to EJ25 engines and requires fabrication skills, making it less suitable for beginners or those seeking a plug-and-play upgrade. Compared to the Tomei exhaust manifold kit, this set offers more flexibility in design but demands technical expertise. The tradeoff is that you get high-quality materials at a lower cost but with increased installation complexity.
Pros:- Made from durable 304 stainless steel for longevity
- Optimized port size enhances airflow for better performance
- Cost-effective solution compared to fully assembled headers
Cons:- Limited to EJ25 engine applications, reducing versatility
- Requires welding and fabrication skills for installation
Best for: Custom fabricators or experienced Subaru enthusiasts comfortable with welding and engine tuning.
Not ideal for: Beginners or those seeking a straightforward bolt-on upgrade without fabrication skills.
- Material:304 Stainless Steel
- Thickness:1/2 inch
- Port Size:1.75 inch
- Quantity:Set of 2
Our verdict“This flange set is best suited for seasoned fabricators aiming to create custom turbo headers for EJ25 engines.”
Tomei Exhaust Manifold Kit for WRX/STI EJ20/25 – Equal Length SUS304 Performance Manifold with Titan Exhaust Bandage
The Tomei exhaust manifold kit stands out for its 4-1 equal length design, which can significantly improve exhaust flow and engine responsiveness compared to stock headers. Crafted from lightweight, rust-proof SUS304 stainless steel, it offers excellent durability and resistance to corrosion. The inclusion of the Titan Exhaust Bandage is a notable feature, helping to reduce under-hood heat and protect surrounding components. This kit is compatible with a range of Subaru models, including WRX and STI, but installation can be complex and may require technical skill, especially for those unfamiliar with exhaust modifications. Unlike the Prosport header, which focuses on ease of installation, Tomei emphasizes performance gains, but at the expense of increased installation effort and limited compatibility.
Pros:- Enhances exhaust flow and engine responsiveness
- Made from durable SUS304 stainless steel for longevity
- Includes heat-reducing Titan Exhaust Bandage
Cons:- Installation may be technically challenging
- Limited to specific Subaru WRX/STI models
- Price and availability not specified
Best for: Performance-oriented drivers with mechanical skills who want to upgrade exhaust flow on WRX and STI models.
Not ideal for: Casual enthusiasts seeking a simple, bolt-on upgrade or those with limited mechanical experience.
- Design:4-1 equal length
- Material:SUS304 stainless steel
- Includes:exhaust manifold, heat bandage, gaskets, hardware
- Compatibility:WRX, STI EJ20/25
Our verdict“This kit offers tangible performance improvements for experienced tuners willing to handle complex installation tasks.”
Compatible with Subaru WRX STI Equal Length Header by Prosport
The Prosport equal length header is designed specifically for the Subaru WRX STI, making it an attractive choice for owners seeking a direct replacement that balances durability and ease of installation. Its construction from automotive-grade materials ensures it withstands high temperatures and vibrations typical of aggressive driving. Unlike the more complex Tomei kit, this header is tailored for straightforward bolt-on installation, appealing to DIY mechanics and repair shops. However, its limited compatibility means it won’t fit other Subaru models, and the lack of detailed performance specs leaves some questions about actual gains. Compared with the Tomei kit, this is simpler and more accessible but may lack the performance edge of a high-end, custom-fabricated setup.
Pros:- Made from durable, automotive-grade materials
- Easy to install for experienced DIYers and professionals
- Designed specifically for Subaru WRX STI
Cons:- Limited to WRX STI applications
- No detailed performance benchmarks provided
Best for: DIY owners and professional shops focused on reliable, straightforward upgrades for Subaru WRX STI.
Not ideal for: Owners of other Subaru models or those seeking maximum performance metrics without considering compatibility constraints.
- Application:Subaru WRX STI
- Type:Equal Length Header
- Material:Automotive-grade materials
Our verdict“This header makes the most sense for WRX STI owners seeking a durable, plug-and-play upgrade with minimal fuss.”
How We Picked
I evaluated these headers based on build quality, material durability, flow efficiency, and ease of installation. Performance gains were considered alongside customer reviews and manufacturer reputation to ensure real-world reliability. Cost was also a factor, with a focus on providing options for different budgets. The ranking reflects a combination of value, performance, and overall quality, ensuring that each product offers a distinct advantage for specific buyer needs.Factors to Consider When Choosing Unequallength Header Subaru Brz
Choosing the right unequallength header for your Subaru BRZ involves understanding several key factors. Not all headers are created equal, and the right choice depends on your goals—whether that’s increased horsepower, a more aggressive exhaust note, or longevity. Additionally, installation complexity and compatibility with other modifications can influence your decision. This guide will highlight the most critical aspects to consider beyond just price or brand, helping you make an informed purchase.Performance and Flow Efficiency
The primary reason for upgrading headers is to improve exhaust flow, which can boost horsepower and torque. Unequal length headers typically provide a different flow dynamic compared to equal length designs, often favoring sound and mid-range performance. It’s essential to consider how the design impacts your engine’s breathing and whether it aligns with your performance goals. Higher-flow headers usually require supporting modifications like tuning and upgraded exhaust systems for optimal results.
Material Quality and Durability
Headers made from SUS304 stainless steel or similar high-grade materials tend to last longer and resist corrosion better than cheaper alternatives. While premium materials cost more upfront, they usually pay off in longevity and consistent performance over time. Cheaper headers might degrade faster, leading to potential leaks or cracks, especially in demanding driving conditions. Investing in quality materials is often worthwhile for daily drivers or those planning extensive modifications.
Ease of Installation and Compatibility
Some headers are designed for straightforward bolt-on installation, while others may require welding or significant modification. It’s important to verify compatibility with your specific model year and engine setup. Complex installs can lead to increased labor costs or the need for additional parts like gaskets and clamps. If you lack mechanical experience, choosing a header with clear instructions and proven compatibility can save time and frustration.
Sound Characteristics
Unequal length headers are often chosen for their distinct exhaust note, which tends to be more aggressive and louder than stock. However, sound preferences vary—some drivers prefer a subtle growl, while others seek a roaring tone. Consider whether the header’s design influences drone or resonance at cruising speeds. Pairing headers with appropriate exhaust components can help achieve the desired sound profile without unwanted noise or vibrations.
Budget and Long-Term Value
While premium headers cost more initially, they can offer better durability and performance gains, translating into a better long-term investment. Cheaper options may seem attractive but could lead to increased maintenance or early replacement. Balancing your budget with your performance expectations is crucial—spending more on a quality header often results in a more satisfying and trouble-free ownership experience.
Frequently Asked Questions
Will upgrading to an unequal length header improve my Subaru BRZ’s horsepower?
Upgrading to an unequal length header can improve horsepower by reducing exhaust backpressure and enhancing flow, especially in mid-range RPMs. However, the actual gains depend on other modifications like tuning, exhaust, and intake. For most setups, a quality header offers a noticeable performance boost without requiring extensive additional work, making it a worthwhile upgrade for enthusiasts seeking more power.
Are unequal length headers louder or more drone-prone than equal length headers?
Unequal length headers typically produce a more aggressive exhaust tone, which can be louder and sometimes more drone-prone at certain RPMs. The design influences sound wave reflections, often resulting in a deeper, raspier note. Pairing headers with resonators or specific exhaust components can help mitigate drone if it becomes bothersome, but expect a generally louder sound profile compared to stock or equal length headers.
Is it worth upgrading to a high-end header if I only drive occasionally?
If your driving is infrequent or mostly city commuting, investing in a premium header might provide less noticeable benefits. However, if you value sound, longevity, or plan future modifications, a high-quality header can still be beneficial. Cheaper headers may suffice for casual use but could wear out faster or offer less performance gains over time. Consider your long-term plans and how much you value durability and sound enhancements.
Will installing an unequal length header require tuning or other modifications?
Most aftermarket headers can be installed without extensive modifications, but tuning is often recommended to maximize performance gains and ensure proper engine operation. Some headers may interfere with existing components or require gasket replacements. If you plan to push your setup further, additional modifications like an ECU tune, upgraded exhaust, or intake may be necessary to fully realize the benefits and avoid troubleshooting issues.
How do I choose between equal and unequal length headers for my BRZ?
The decision depends on your priorities. Unequal length headers often favor a louder, more aggressive sound and can provide performance improvements at mid-range RPMs. Equal length headers tend to be smoother, with less drone and a more refined tone, better suited for daily driving. Consider your desired sound profile, budget, and whether you’re aiming for maximum power or a balanced driving experience when making your choice.
Conclusion
For most drivers seeking a balanced mix of performance and durability, the Best Overall pick offers reliable gains without excessive complexity. Enthusiasts prioritizing maximum flow and sound might prefer higher-end options like the Tomei High-Flow Manifold, while budget-conscious buyers can consider solid mid-range choices like the Prosport header. Beginners or those with minimal modification plans should lean toward straightforward, bolt-on solutions that don’t require extensive tuning or fabrication. Ultimately, your decision should align with your driving style, goals, and willingness to invest in long-term reliability.
