Finding the best coilover kits for Subaru STI requires balancing performance, comfort, and value. The Rev9 Hyper-Street II Kit stands out for offering a great mix of adjustability and affordability, making it ideal for most enthusiasts. For those seeking a premium experience, BC Racing BR Series delivers extreme low stance and advanced damping control. Meanwhile, the maXpeedingrods Coilovers are a solid choice for budget-conscious buyers who still want decent performance. Keep in mind that tradeoffs often involve ride comfort versus handling sharpness, or affordability versus durability. Continue reading for a detailed breakdown of each option to find the perfect fit for your Subaru STI.
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Key Takeaways
- Top picks balance adjustability, ride quality, and price, with the Rev9 Hyper-Street II as the best overall for versatility.
- Premium models like BC Racing excel in customization and lowering capabilities but come at a higher cost.
- Budget options from maXpeedingrods offer surprisingly good performance but may sacrifice some ride comfort and durability.
- Adjustability features, especially damping and ride height, are crucial for tailoring your suspension to street or track use.
- Compatibility and ease of installation vary; some kits require more technical skill or additional parts.
| coilover kits for Subaru STI | Fitment |
|---|---|
| maXpeedingrods Coilovers for S | Subaru WRX and WRX STI Sedan 2015-2021 (VA) |
| Coilovers for Subaru Impreza W | — |
| EVIL ENERGY Coilovers for 2015 | — |
| maXpeedingrods Coilover for Su | Subaru WRX (VA1) / WRX STI (VA2) 2015-2021 |
| Rev9 R9-HS2-045 Hyper-Street I | Subaru WRX (VA1) / WRX STI (VA2) 2015-2021 |
| BC Racing BR Series Coilovers | 2015+ Subaru WRX/STI |
| maXpeedingrods T6 Coilover Sus | 2008-2014 Subaru Impreza WRX STI |
| maXpeedingrods Height Adjustab | — |
| Rev9 R9-HS2-001_1 compatible w | — |
| maXpeedingrods 24-Level Dampin | 2000-2007 Subaru Impreza WRX & STI |
More Details on Our Top Picks
maXpeedingrods Coilovers for Subaru WRX and WRX STI Sedan 2015-2021
This coilover kit stands out for its combination of durability and straightforward adjustability, making it a solid choice for those seeking a balance between performance and reliability. Compared with the Rev9 Hyper-Street II, it offers simpler factory preset damping, which might appeal to drivers who prefer minimal fuss. The maXpeedingrods construction from T6-treated 6061 aluminum ensures strength without excess weight, supporting consistent handling. However, its fixed spring rates mean you lack the ability to fine-tune stiffness, unlike the Rev9 kit that provides independent spring tension adjustments. This pick makes the most sense for enthusiasts who want a durable, easy-to-install coilover that enhances handling without extensive customization.
Pros:- Adjustable ride height for a more aggressive stance
- High-tensile springs tested for minimal distortion
- Improves steering response and reduces noise
- Constructed from durable T6-treated 6061 aluminum
Cons:- Limits adjustment to lowering height only (1-3 inches)
- Fixed spring rates with no damping adjustment
Best for: Subaru owners who want a reliable, durable coilover with adjustable ride height for street and casual track use
Not ideal for: Those seeking highly customizable damping settings or factory ride height retention
- Fitment:Subaru WRX and WRX STI Sedan 2015-2021 (VA)
- Front Spring Rate:10 kg/mm
- Rear Spring Rate:8 kg/mm
- Ride Height Adjustment:1-3 inches lower
- Material:6061 aluminum alloy with T6 treatment
- Damping:Factory preset damping
Our verdict“Best suited for drivers who want a tough, straightforward coilover that improves handling without complex tuning.”
Coilovers for Subaru Impreza WRX STi 2008-2013
This full kit offers a straightforward replacement for stock suspension, making it a good option for budget-conscious enthusiasts. Unlike the EVIL ENERGY kit, which provides height adjustment, this model sticks to direct bolt-on replacement with no adjustable damping, simplifying installation and reducing cost. It features a consistent spring rate of 8kg/mm front and rear, suitable for street use though lacking the fine-tuning options of higher-end kits. This makes it ideal for owners who want reliable handling improvements without the complexity or expense of adjustable features, but it might fall short for those seeking aggressive track tuning or custom ride heights.
Pros:- Full replacement kit with coilovers and struts
- Simple bolt-on installation with standard tools
- Consistent spring rate suitable for street use
Cons:- No height or damping adjustment options
- Less suited for aggressive or track-focused setups
Best for: Budget-minded Subaru owners seeking reliable, direct replacement coilovers for daily driving
Not ideal for: Drivers wanting adjustable damping or custom ride height for track or spirited driving
Our verdict“A practical choice for owners who want a dependable, no-fuss suspension upgrade at an affordable price.”
EVIL ENERGY Coilovers for 2015-2021 Subaru WRX/WRX STI – Height Adjustable Lowering Kit (Red)
This coilover kit offers a user-friendly height adjustment range of 1-3 inches, making it ideal for newcomers to suspension tuning who want a noticeable stance change. The twin-tube design balances comfort and handling, but professional installation is recommended due to its complexity. While it doesn’t provide damping adjustment, the anti-corrosion coating on the heat-treated steel springs enhances durability. Compared to more advanced kits like the Rev9 Hyper-Street II, it sacrifices adjustability for ease of use, making it a good entry-level option for street enthusiasts willing to pay for professional setup.
Pros:- Height adjustable with 1-3 inch range
- Durable heat-treated steel springs with anti-corrosion coating
- Twin-tube design for comfort on rough roads
Cons:- Professional installation recommended
- Limited damping adjustment options
Best for: Beginners or casual enthusiasts wanting an easy, adjustable lowering kit for daily driving
Not ideal for: Experienced tuners or track racers who need detailed damping control and fine-tuning
Our verdict“Ideal for those new to suspension upgrades who want a straightforward, adjustable lowering kit for street use.”
maXpeedingrods Coilover for Subaru WRX/WRX STI 2015-2021 Sedan
This coilover is tailored for drivers who want a more aggressive stance and improved handling, thanks to its 24-level damping adjustment and 1-3 inch lowering capability. Unlike the maXpeedingrods T6 series, this upgraded T7 version offers adjustable damping, allowing for precise tuning between street comfort and track performance. The monotube design and racing springs contribute to stability, but it cannot revert to factory ride height, which might be a drawback for some. The inclusion of a wide damping adjustment range makes it suitable for spirited driving, though it requires professional installation and a good understanding of suspension tuning.
Pros:- 24-level damping force adjustment for precise tuning
- Adjustable ride height within 1-3 inches
- Racing springs for enhanced performance
- Monotube steel alloy body for durability
Cons:- Cannot be adjusted back to factory height
- Requires professional installation
- No included installation instructions
Best for: Enthusiasts who want a highly adjustable coilover for aggressive street or track use
Not ideal for: Casual drivers or those wanting a factory ride height option without complex tuning
- Fitment:Subaru WRX (VA1) / WRX STI (VA2) 2015-2021
- Front Spring Rate:10 kg/mm
- Rear Spring Rate:6 kg/mm
- Damping Adjustment:32-way
- Shock Type:Monotube, steel alloy body
- Adjustability:Independent spring tension and ride height
- Type:Lowering kit
Our verdict“Best suited for experienced drivers seeking maximum adjustability for aggressive street or track performance.”
Rev9 R9-HS2-045 Hyper-Street II Coilover Kit for Subaru WRX (VA1) / WRX STI (VA2) 2015-2021, 32-Way Damping Adjustment
The Rev9 Hyper-Street II coilover kit offers a high level of customization with 32 damping adjustment levels and independent spring tension and ride height controls. Its monotube design with steel alloy bodies ensures durability and precise handling, especially suited for performance-oriented drivers. Unlike the fixed-damping maXpeedingrods, this kit caters to those who want extensive tuning flexibility and a lowered stance, but it cannot revert to factory height. While the lack of included instructions may challenge novices, experienced tuners will appreciate the detailed damping options, making it a top choice for serious enthusiasts.
Pros:- 32-way damping force adjustment for fine-tuning
- Independent spring tension and ride height settings
- Durable monotube steel alloy construction
- Specific fitment for 2015-2021 WRX/STI
Cons:- No option to return to factory ride height
- No included installation instructions
- Requires professional setup
Best for: Advanced users seeking maximum tuning flexibility for street or track applications
Not ideal for: Beginners or casual drivers who prefer plug-and-play setups
- Fitment:Subaru WRX (VA1) / WRX STI (VA2) 2015-2021
- Front Spring Rate:10 kg/mm
- Rear Spring Rate:6 kg/mm
- Damping Adjustment:32-way
- Shock Type:Monotube, steel alloy body
- Adjustability:Independent spring tension and ride height
- Type:Lowering kit (no factory height)
Our verdict“Ideal for experienced tuners who want comprehensive damping control for high-performance driving.”
BC Racing BR Series Coilovers (Extreme Low) for 2015+ Subaru WRX/STI
This kit stands out for its balance between affordability and high-quality adjustability, making it a strong choice for enthusiasts who want control over ride quality. Compared with the maXpeedingrods T6, it offers more damping adjustment (30 clicks versus 24), which translates into finer tuning for both street and spirited driving. The included front camber plates also give a notable advantage for precise alignment, especially useful on lowered setups. However, the kit is heavier at 45 lbs and the Extreme Low version may be less practical for daily street use, especially on rough roads. This makes it better suited to drivers who prioritize handling and appearance over daily comfort. Nevertheless, the limited 1-year warranty and weight are tradeoffs to consider.
Pros:- 30 clicks of damping adjustment for precise tuning
- Front camber plates included for alignment flexibility
- Fully rebuildable for long-term maintenance
- Height adjustment independent of spring preload
Cons:- Heavy at 45 lbs, may affect ease of installation
- Only 1-year limited warranty
- Extreme Low version may cause ride comfort issues on rough streets
Best for: Performance enthusiasts who seek adjustable coilovers with a focus on handling and appearance.
Not ideal for: Daily drivers who need a lighter, more comfortable ride for regular roads and longer commutes.
- Part Number:F-25E-BR
- Brand:BC Racing
- Series:BR Series (Extreme Low)
- Fitment:2015+ Subaru WRX/STI
- Damping Adjustment:30 clicks
- Shock Design:Mono-tube
- Included:Complete 4-corner kit, 2 front camber plates
- Warranty:1 year limited
Our verdict“This kit is ideal for drivers who want a customizable, durable setup with a focus on performance and stance.”
maXpeedingrods T6 Coilover Suspension Kit for Subaru Impreza WRX STI 2008-2014, Blue
This kit offers 24-level damper adjustment and threaded ride-height, making it a flexible choice for drivers who enjoy customizing their suspension for different conditions. Unlike the Rev9 Hyper-Street II with 32 damping levels, the T6 provides slightly fewer adjustment options but still covers street, mountain, and track modes effectively. Its high-tensile springs are stress-tested over 600,000 cycles, ensuring longevity, while the aluminum plates help with weight reduction. A key tradeoff is that lowering the ride height will reduce ride comfort, and the kit does not retain factory ride height when lowered, which might be a dealbreaker for daily comfort. It’s best suited for drivers who want a balance of performance and durability on their 2008-2014 models.
Pros:- 24 levels of damper adjustment for tailored handling
- Threaded height adjustment for 1-3 inches lowering
- Durable high-tensile springs stress tested over 600,000 cycles
- Supports street, mountain, and track modes
Cons:- Does not maintain factory ride height when lowered
- Ride comfort may be affected by aggressive lowering
- Limited to specific 2008-2014 Subaru models
Best for: Mid-level enthusiasts who want adjustable performance for street and occasional track use.
Not ideal for: Daily commuters seeking a softer ride or those needing to retain factory ride height.
- Brand:maXpeedingrods
- Series:T6
- Product Type:Coilover suspension kit
- Fitment:2008-2014 Subaru Impreza WRX STI
- Damper Adjustment:24 levels
- Height Adjustment:1-3 inches
- Spring Rate (Front/Rear):8 kg/mm / 7 kg/mm
- Construction Features:Aluminum plates, high-tensile springs
Our verdict“This kit suits drivers who want comprehensive tuning options and durability without sacrificing versatility across different driving conditions.”
maXpeedingrods Height Adjustable Coilovers Suspension Kit for Subaru Impreza WRX STI 2008-2014 (Red)
This kit is tailored for owners who want a reliable height-adjustable setup with factory-like damping and durable materials. Its 6061-T6 aluminum alloy construction offers strength and corrosion resistance, while the 1-3 inch ride height adjustment allows for a more aggressive stance without sacrificing too much comfort. Unlike the Rev9 Hyper-Street II, which has 32 damping levels, this kit features preset damping for ease of use, making it more suitable for those who prefer simplicity over fine tuning. The main tradeoff is that it does not retain factory ride height and the damping is not user-adjustable, which could limit performance tuning. It’s a good fit for casual enthusiasts wanting a sturdy, adjustable coilover for daily street use.
Pros:- Height adjustable for personalized stance
- High-tensile springs tested for durability
- 6061-T6 aluminum construction for strength
- Factory preset damping for consistent handling
Cons:- Damping is not user-adjustable
- Does not retain factory ride height when lowered
- Limited to specific Subaru models
Best for: Casual drivers who want a durable, height-adjustable coilover with minimal setup fuss.
Not ideal for: Performance-focused drivers seeking extensive damping adjustments or specific ride modes.
- Brand:maXpeedingrods
- Manufacturer Part Number:RA59RL
- Vehicle Fitment:2008-2014 Subaru Impreza WRX STI
- Ride Height Adjustment:1-3 inches
- Spring Rate:8 kg/mm front, 7 kg/mm rear
- Material:6061-T6 aluminum alloy
- Color:Red
- Item Weight:58.8 lbs
Our verdict“This kit is best suited for owners who want a robust, adjustable suspension without the complexity of fine damping tuning.”
Rev9 R9-HS2-001_1 compatible with Subaru Impreza WRX (GDA) 2002-07 Hyper-Street II Coilover Kit w/ 32-Way Damping Force Adjustment Lowering Kit
This coilover kit provides 32-way damping adjustment, offering the most granular control for tuning ride stiffness and rebound, especially appealing for those who want to dial in their handling precisely. Its mono-tube shocks with larger capacity improve comfort on rough roads while maintaining performance. Compared to the BC Racing kit, it offers more damping levels, making it ideal for enthusiasts who enjoy fine-tuning their suspension for different driving scenarios. The kit’s independent spring tension and full-length adjustment allow for lowering without sacrificing comfort, but it does not match factory ride height and is recommended for experienced installers. This setup is perfect for highly engaged drivers focused on aggressive lowering and detailed tuning.
Pros:- 32 damping levels for detailed tuning
- Full length adjustable for aggressive lowering
- Mono-tube shocks with larger oil capacity
- Independent spring tension for custom stiffness
Cons:- Does not maintain factory ride height
- Requires professional installation and alignment
- Limited to GDA Subaru Impreza WRX models
Best for: Advanced users who want maximum damping adjustment and precise ride tuning for older Subaru models.
Not ideal for: Novice or daily drivers who prefer a simpler, factory-like ride quality.
- ASIN:B07N8K9NGC
- Model Number:R9-HS2-001_1
- Damping Adjustment Levels:32
- Spring Rate (Front/Rear):8 kg/mm / 6 kg/mm
- Shock Design:Mono-tube
- Full Length Adjustment:Yes
Our verdict“This kit is designed for drivers who demand extensive damping control and precise handling adjustments, especially on older Subaru models.”
maXpeedingrods 24-Level Damping Adjustable Coilover Kit for Subaru Impreza WRX 2000-2007, WRX STI GDB, and Forester SG
This older-model compatible coilover offers 24 damping adjustment levels, making it suitable for owners of Subaru Impreza WRX and STI GDB, Forester SG, and Saab 9-2X. Its twin-tube design provides a longer stroke, which enhances ride comfort over rough surfaces compared to monotube options. The adjustable camber plates and 1-3 inch height range give flexibility for stance customization. While it doesn’t support factory ride height retention or offer the same damping granularity as newer kits like the Rev9 Hyper-Street II, it remains a solid choice for those restoring or upgrading older vehicles. A key consideration is that it may not match the ride comfort of more modern designs, and installation requires some mechanical know-how.
Pros:- 24 damping levels for versatile tuning
- Longer stroke twin-tube design for comfort
- Adjustable camber plates included
- Supports a 1-3 inch height adjustment
Cons:- Does not maintain factory ride height
- Less damping granularity than newer kits
- Installation may require professional help
Best for: Owners of older Subaru models seeking a reliable, adjustable suspension upgrade with a longer stroke design.
Not ideal for: Newer Subaru owners or those wanting fine damping control or factory ride height retention.
- Brand:maXpeedingrods
- Fitment:2000-2007 Subaru Impreza WRX & STI
- Damping Adjustment Levels:24
- Spring Rate:9 kg/mm front, 7 kg/mm rear
- Design:Twin-tube
- Color:Red
Our verdict“This kit offers a practical upgrade for older Subaru models prioritizing comfort and basic adjustability over fine-tuning.”
How We Picked
These coilover kits were evaluated based on a combination of performance, build quality, adjustability, ease of installation, and value for money. We prioritized products that offer reliable damping with multiple adjustment levels, as well as those suited for daily driving or spirited handling. Compatibility with the Subaru STI models from 2008 to 2021 was a key factor, along with user reviews and brand reputation. The ranking reflects a balance between cost and features, helping enthusiasts of different experience levels find the best fit for their needs.Factors to Consider When Choosing Best Coilover Kits For Subaru STI
Choosing the right coilover kit for your Subaru STI involves more than just selecting the most popular model. Factors like ride height adjustment, damping control, and build quality influence your driving experience and long-term durability. It’s important to consider your primary use—whether daily driving, track days, or a mix—and how much customization you desire. Additionally, compatibility and installation complexity can impact your overall satisfaction. Here are key factors to keep in mind before making a decision.Adjustment Range and Damping Control
The ability to fine-tune ride height and damping force is essential for tailoring your Subaru STI’s handling. Kits with multiple damping levels, such as 32-way or 24-way adjustments, provide greater control over ride stiffness and comfort. This flexibility benefits those who want a comfortable daily driver that can also handle spirited driving or track use. However, more adjustment options often mean a steeper learning curve and higher price points. Consider your comfort with tuning and your specific driving goals when evaluating this feature.
Build Quality and Durability
High-quality materials like stainless steel or anodized aluminum improve the longevity of coilover components, especially if you plan to drive in harsh conditions or on rough roads. Cheaper kits may use lower-grade metals that wear out faster or develop leaks. Investing in a well-built set can save money over time by reducing the need for replacements or repairs. Look for reputable brands with positive user feedback on durability to ensure your coilovers stand the test of time.
Ease of Installation and Compatibility
Some coilover kits are straightforward to install with basic tools, while others may require professional help or additional parts, like camber plates or mounting hardware. Confirm that the kit is compatible with your specific Subaru STI model year to avoid fitment issues. Reading detailed installation guides and user reviews can reveal potential pitfalls or needed modifications. Choosing a kit with clear instructions and strong manufacturer support can simplify the upgrade process.
Ride Comfort vs. Handling Performance
There’s often a tradeoff between a comfortable ride and aggressive handling. Lowering your Subaru STI improves aesthetics and handling but can lead to a stiffer ride and increased wear on suspension components. Conversely, softer setups prioritize comfort but may compromise sharp handling. Determine what balance suits your driving style—whether you prioritize daily comfort or track-ready responsiveness—and select a kit accordingly.
Price and Value
High-end coilovers offer premium features like advanced damping and extensive adjustability, but at a steep cost. Budget-friendly options from brands like maXpeedingrods provide decent performance for less, yet may lack long-term durability or fine-tuning options. Assess your budget alongside your performance needs. Often, investing a bit more yields a significantly better experience, especially if you plan to keep the coilovers long-term.
Frequently Asked Questions
Can I install coilovers myself on my Subaru STI?
Many coilover kits are designed for DIY installation if you have basic mechanical skills and tools. However, proper alignment and some adjustments might require professional help to ensure optimal handling and safety. If you’re unsure about the process, consulting a professional is recommended, especially for models with complex mounting or damping adjustments. Proper installation not only maximizes performance but also extends the lifespan of your suspension components.
Will lowering my Subaru STI with coilovers affect ride comfort?
Lowering your Subaru STI can improve handling and aesthetics, but it often results in a firmer ride. The extent of comfort loss depends on the coilover’s damping settings and the amount of lowering. Adjustable coilovers allow you to fine-tune the ride quality to some degree, balancing comfort with performance. Keep in mind that excessive lowering may lead to harsher rides and increased risk of bottoming out or tire rubbing.
How long do coilover kits typically last?
The lifespan of coilover kits varies based on build quality, usage, and maintenance. Premium models with robust materials can last several years, even over a hundred thousand miles, if properly maintained. Cheaper kits might wear out faster or develop leaks sooner. Regular inspection, cleaning, and proper damping adjustments help prolong the life of your coilovers, regardless of brand.
Are adjustable coilovers worth the extra cost?
Adjustable coilovers provide significant benefits in tuning your vehicle’s handling and ride height, which can be especially useful for enthusiasts who frequently switch between street and track setups. The extra cost is often justified by the ability to customize damping and ride height to match your driving style. However, if you only plan to use your Subaru STI for daily driving, a non-adjustable but quality coilover might offer better value without the complexity.
What should I consider when choosing between coilover brands?
Brand reputation, build quality, and customer reviews are vital factors. Established brands like BC Racing or Rev9 typically offer better durability, more adjustability, and easier support. Cheaper, lesser-known brands may save money upfront but could sacrifice long-term performance and reliability. It’s wise to research user feedback, warranty policies, and availability of replacement parts to ensure your investment stands up to your driving needs.
Conclusion
For most Subaru STI owners, the Rev9 Hyper-Street II Kit offers a balanced mix of affordability, adjustability, and performance, making it the best overall choice. Enthusiasts seeking a premium, highly customizable setup should consider the BC Racing BR Series, despite its higher cost. Budget-conscious buyers can find surprisingly capable options in the maXpeedingrods Coilovers, which deliver good value for daily driving. Beginners or those unfamiliar with suspension tuning will benefit from kits with straightforward installation and moderate adjustments, such as the Rev9 or maXpeedingrods options. Ultimately, the best kit depends on your specific driving goals, budget, and willingness to fine-tune your suspension setup.
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