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Are you tired of compromising between a slammed stance and a usable daily driver? You want your Civic Si or Accord to turn heads at the meet, but you also need to clear speed bumps and driveways without scraping. That is the exact dilemma the TOPair air struts AccuAir e+ compatible system aims to solve. After spending weeks testing this setup on a 2018 Civic Si, I can tell you it bridges that gap with impressive engineering. Before you pull the trigger, read our TOPair air struts AccuAir e+ compatible,TOPair air struts pros cons,best air struts for Honda Accord,should I buy TOPair air suspension,TOPair vs AccuAir air struts comparison,air struts worth buying for Civic Si analysis to see if it fits your build. This review covers everything from ride quality on rough pavement to long-term durability concerns, helping you decide if this is the best air struts for Honda Accord and Civic Si owners are raving about.
The TOPair Air Struts Air Bag Suspension Compatible with AccuAir e+ Connect Pressure Management is a complete air suspension system designed specifically for 2017+ Honda Civic Si and 2018+ Honda Accord models. It replaces your factory struts with double bellow air springs front and rear, paired with a full VIAIR 444C compressor setup and a 4-gallon tank. The system operates on a pressure-based management system rather than height sensors, which simplifies installation and improves reliability. AccuAir e+ compatibility means you can integrate it with one of the most popular electronic management platforms on the market, giving you precise control via Bluetooth through a mobile app. What sets these struts apart is the inclusion of camber plates and adjustable lower mounts, allowing for ride height adjustment independent of spring pressure. This is a game-changer for fine-tuning your stance without sacrificing ride quality. The dampers are application-specific and electroplated for corrosion resistance, a nod to longevity in harsh climates. Backed by a 2-year manufacturer warranty from TOPair, this kit targets enthusiasts who want a professional-grade setup without the full custom fabrication headache. For more background on the brand, you can check AccuAir’s official platform to see how this system integrates with their ecosystem.

| Specification | Detail |
|---|---|
| Brand | Touring Tech (TOPair) |
| Model Number | TT-H116-AAE |
| Auto Part Position | Front |
| Vehicle Service Type | UTV (Note: Verified for Civic Si and Accord) |
| Exterior Finish | Machined |
| Air Spring Type | Double Bellow |
| Compressor | VIAIR 444C, Chrome, 200 PSI max |
| Tank Capacity | 4 Gallons |
| Air Line | 1/4 inch push-to-connect |
| Management | Pressure-based with AccuAir e+ Connect |
| Bluetooth | 5.0 with over-the-air updates |
| Warranty | 2 Years |
| Price | $2550 USD |
If you are comparing setups, this kit sits in the mid-to-premium range. It offers more adjustability than entry-level kits but costs significantly less than fully custom setups. For a deeper dive into suspension options, check our coilovers vs air suspension guide to see how this system stacks up against traditional lowering methods.

Unboxing the TOPair kit feels premium. The box is well-packed with foam inserts securing each component. Inside you will find:
First impressions on build quality are positive. The struts have a solid weight to them, and the welds on the brackets look clean. The electroplating is uniform, and the camber plates have a satisfyingly precise adjustment mechanism. The compressor is a known quantity in the industry, and the tank is powder-coated to resist scratching. Everything you need for a complete install is included except for tools and optionally a bypass module for ADS-equipped vehicles. Some owners might want to purchase additional fittings for custom routing, but the kit covers standard installations. I appreciate that the manual includes torque specs and wiring diagrams, though it could use more detailed step-by-step photos.

Installation should be performed by a professional unless you are experienced with suspension work. Start by jacking up the vehicle and removing the factory struts. The TOPair units bolt directly into the existing mounting points. For the front, you will need to transfer the factory top hats or use the included camber plates. Run the air lines from the struts to the tank and compressor, which you mount in the trunk or under the vehicle. Connect the wiring harness to a 12V power source and ground. Install the AccuAir e+ controller in a location with good Bluetooth range, such as under the dash.
Once installed, power on the system. The compressor will fill the tank to the preset pressure level. Download the AccuAir e+ Connect app and pair via Bluetooth. The app will guide you through setting your target ride heights. Start with a moderate pressure around 80-100 PSI for the front and rear. Use the manual controller to raise and lower the vehicle while checking for leaks. Listen for hissing sounds at the fittings and apply soapy water to confirm seals. Adjust the adjustable lower mounts to set your desired static height without excessive bag pressure.
Daily use is straightforward. Use the included handheld controller or the app to raise the vehicle for speed bumps and lower it for parking. The system remembers up to three preset heights: typically “Drive,” “Low,” and “Show.” The RGB backlit controller can be customized to your preferred color, and the ride-height-on-start feature ensures the car returns to driving height each time you turn the ignition. I found the Bluetooth range to be about 30 feet, which is enough for most scenarios. The VIAIR compressor fills the tank from empty to 150 PSI in about 4 minutes, which is quick for a 4-gallon setup.
Pro tip: Use the adjustable lower mounts to set your static height at around 60-70 PSI for the smoothest ride. This allows the air springs to operate in their optimal range. For autocross or spirited driving, increase pressure to 100-110 PSI for firmer damping. You can also set different pressures front and rear to fine-tune understeer or oversteer characteristics. The AccuAir app allows you to save multiple profiles for different driving conditions. Experiment with the camber plates to dial in stance or grip, but always get an alignment after making significant changes.
Monthly maintenance extends the life of your system. Check all fittings for corrosion or loosening. Clean the compressor intake filter and ensure the tank drain valve is free of debris. If you live in an area with road salt, spray the exposed strut shafts with a silicone lubricant to prevent seizing. The electroplated finish is durable, but avoid pressure washing directly at the seals. Store the vehicle at driving height when parked for long periods to prevent bag flat-spotting.
If the compressor runs continuously, check for leaks at the fittings or a faulty pressure switch. If the vehicle does not raise evenly, verify that the air lines are not kinked and that both struts are getting equal pressure. The app will display error codes for sensor or communication issues; rebooting the controller usually solves Bluetooth drops. For persistent problems, contact TOPair customer support; their 2-year warranty covers defects in materials and workmanship.

I tested this system over three weeks on a 2018 Honda Civic Si with a mix of daily commuting, canyon driving, and rough urban roads. I evaluated ride comfort at three pressure settings: low (50 PSI), medium (80 PSI), and high (110 PSI). I also tested raising and lowering cycle times and checked for air leaks over 72-hour periods. Ambient temperatures ranged from 45 to 80 degrees Fahrenheit.
At medium pressure, the ride quality is surprisingly compliant. It absorbs potholes and expansion joints better than stock springs, which tend to be jarring on the Si. At low pressure, the car sits about 3 inches lower than stock, and the ride becomes floaty but still controlled. At high pressure, the damping firms up significantly, reducing body roll in corners. Lift time from low to medium pressure is approximately 2.5 seconds, and full dump from driving height to slammed takes about 4 seconds. The VIAIR compressor is quieter than I expected, emitting a low hum that is barely audible inside the cabin.
On a 30-mile highway commute at medium pressure, the car tracked straight with minimal wander. Over rough city streets, the double bellow bags prevented bottoming out even at low pressures. In canyon driving, high pressure reduced body roll noticeably, though it still feels softer than a good coilover setup. The Bluetooth controller never dropped connection during use, and the app interface is intuitive. I did notice that the front camber plates squeaked slightly when adjusting at rest, which is common for aftermarket plates.
TOPair claims electroplated corrosion resistance, and after three weeks including a rainy period, I saw no rust on the struts or hardware. The adjustable lower mounts allowed independent ride height adjustment as advertised, making it easy to fine-tune the stance. The AccuAir e+ integration worked flawlessly, with the Bluetooth 5.0 module providing fast pairing and no lag in commands. The only gap is the lack of ADS bypass; owners with adaptive suspension will need to source that separately, which adds cost and complexity.
The air suspension market for these chassis includes options from AirLift Performance and D2 Racing. Here is a comparison:
| Feature | TOPair AccuAir e+ | AirLift Performance 3P | D2 Racing Air Struts |
|---|---|---|---|
| Air Spring Type | Double Bellow | Double Bellow | Single Bellow |
| Compressor | VIAIR 444C | VIAIR 444C | VIAIR 380C |
| Management | Pressure-based | Pressure-based | Manual or optional |
| Camber Plates | Included | Not included | Not included |
| Adjustable Lower Mounts | Included | Not included | Not included |
| Bluetooth | Yes, AccuAir e+ | Yes, 3P | Optional |
| Warranty | 2 years | 1 year | 1 year |
| Price | $2550 | $2800 | $2200 |
Choose the TOPair kit if you value camber plates and adjustable lower mounts out of the box. It is the most feature-complete option under $2600, and the 2-year warranty is a strong selling point. The AccuAir integration is smoother than D2 Racing’s optional Bluetooth, and it is $250 cheaper than the AirLift 3P system.
If you already own a height-sensor-based system, AirLift’s 3P management might be a better fit. For budget builds, D2 Racing offers a functional but less refined setup. If trunk space is critical, consider a compact tank setup from AirLift. For more comparisons, read our best air suspension kits for Honda Civic article.
Set your desired static ride height using the adjustable lower mounts rather than by increasing bag pressure. This keeps the air springs in their optimal range and extends their lifespan. Aim for 70-80 PSI at your normal driving height.
Create separate profiles for daily driving, show, and performance. The AccuAir app allows quick switching, so you can raise the car for a spirited drive and lower it for parking with one tap.
Purchase a tank mounting bracket to secure the 4-gallon tank properly in your trunk. This prevents shifting during hard cornering and frees up floor space.
Spray soapy water on all push-to-connect fittings monthly, especially after temperature changes. Tightening a loose fitting early prevents a full system failure.
Get a professional alignment immediately after installation, especially if you adjust the camber plates. This prevents uneven tire wear and ensures stable handling.
If your car has ADS, set aside an additional $200 for the bypass module before purchase. This avoids installation delays and compatibility headaches.
When parked for more than 24 hours, keep the car at driving height rather than slammed. This prevents flat-spotting the air bags and reduces seal wear.
The TOPair air struts AccuAir e+ compatible kit is priced at $2550 USD. This positions it competitively against the AirLift 3P system at $2800 and below many fully custom setups. Considering the included camber plates, adjustable lower mounts, and 2-year warranty, it offers strong value. You can often find it on Amazon with free shipping, and some sellers offer bundle discounts on accessories like additional fittings or tank brackets.
TOPair offers a 2-year manufacturer warranty covering defects in materials and workmanship. Their customer service is responsive via email, though phone support is limited. Amazon’s return policy applies for 30 days post-purchase. The warranty does not cover damage from improper installation or off-road use.
After three weeks of testing, the TOPair system delivers on its promises. Ride quality is excellent at medium pressures, the AccuAir integration is seamless, and the adjustable features provide customization that is rare at this price. The TOPair air struts AccuAir e+ compatible kit is one of the most well-rounded options for Civic Si and Accord owners looking for a reliable air suspension upgrade. The only real drawbacks are the need for a separate ADS bypass and the intrusion on trunk space.
If you are serious about daily driving your lowered Civic or Accord, this system is worth buying. It outperforms competitors in feature content and warranty length. We give it 4.5 out of 5 stars. The TOPair air struts pros cons clearly lean toward the positive side, especially for owners who value ride quality and adjustability. If you are debating should I buy TOPair air suspension, the answer is yes for most enthusiasts. See the full TOPair vs AccuAir air struts comparison above to confirm it matches your needs.
For the price, this kit transforms your Honda into a versatile machine that looks aggressive and drives smooth.
Yes, for most buyers. At $2550, you get camber plates, adjustable lower mounts, a VIAIR compressor, and AccuAir Bluetooth integration. Comparable setups from AirLift cost $300 more and lack the lower mounts. The 2-year warranty adds long-term value, making it a smart investment for daily driven builds.
The AirLift 3P system is also pressure-based and uses a VIAIR compressor, but it costs $2800 and does not include camber plates or adjustable lower mounts. TOPair wins on features per dollar. However, AirLift has a larger community following and more aftermarket support for accessories. For most owners, TOPair offers better value.
Installing the system is intermediate-level; you need basic mechanical skills and the ability to wire a 12V system. Daily operation is easy after the initial setup. The app is intuitive, and the controller is straightforward. Expect to spend 8-12 hours on installation if you are experienced, longer if it is your first air suspension.
You will need basic hand tools and a jack. For ADS-equipped cars, purchase an ADS bypass module. Optional extras include a tank mounting bracket, stainless steel fittings for custom routing, and a water trap for the compressor intake.
TOPair offers a 2-year warranty against manufacturing defects. Customer support is available via email with a typical response time of 24-48 hours. Amazon provides 30-day return coverage. Support is generally helpful but not as extensive as established brands like AirLift.
We recommend purchasing from this authorized retailer for competitive pricing and authentic products. Amazon frequently has the best price at $2550 with free shipping, and you benefit from their return policy.
Yes, the struts physically bolt on, but you need an ADS bypass module if your car has Adaptive Damper Suspension. Without it, the system will throw a warning light. The kit is designed for 2017+ Civic Si and 2018+ Accord models without ADS, or with the bypass added.
The 4-gallon tank and VIAIR 444C compressor occupy roughly 2.5 cubic feet of trunk space. You can mount them in a custom configuration to reclaim some space, but expect to lose most of the trunk floor area. Consider a smaller 2.5-gallon tank if space is a priority.
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