Upgrading the suspension on your Infiniti Q50 can transform its handling and appearance, but choosing the right coilovers requires careful research. We compared manufacturer specifications, industry standards, and aggregated owner feedback across multiple forums and review platforms to evaluate the top options. Our analysis focuses on real-world performance, durability, adjustability, and safety to help you make an informed decision. Below are our findings, with honest assessments of each product’s strengths and limitations.
| Photo | Product | Score | Buy |
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KW Variant 3 Coilovers Best Overall Independent rebound and compression adjustment, stainless steel construction |
9.2 | 🛒 Check Price |
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BC Racing BR Series Coilovers Best Value 30-click adjustable damping, camber-adjustable top mounts |
8.7 | 🛒 Check Price |
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Tein Flex Z Coilovers Best Comfort 16-click damping adjustment, powder-coated finish, height adjustable |
8.4 | 🛒 Check Price |
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Fortune Auto 500 Series Coilovers Best for Track Swift springs, 24-click damping, remote reservoir option |
8.8 | 🛒 Check Price |
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Megan Racing EZ Series Coilovers Budget Pick 32-click damping, height adjustable, camber plates included |
7.8 | 🛒 Check Price |
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HKS Hipermax IV GT Coilovers Premium Comfort Pre-set damping from factory, monotube design |
8.1 | 🛒 Check Price |
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ST Suspensions XTA Plus 3 Coilovers German Engineering Galvanized steel body, adjustable rebound damping, height adjustable |
8.3 | 🛒 Check Price |
1. KW Variant 3 Coilovers: Best Overall
The KW Variant 3 coilovers are a top-tier choice for Q50 owners seeking a balanced upgrade. With independent rebound and compression adjustment, they allow precise tuning for different driving conditions. Owner feedback highlights a compliant ride on rough roads while maintaining excellent body control during cornering. The stainless steel construction and TUV certification add confidence in safety and longevity.
However, the high cost puts them out of reach for many. If you rarely push your car or prioritize affordability, simpler options may suffice. Also, the adjustment knobs can be difficult to reach on the rear dampers without lifting the car. We recommend these for enthusiasts who value track-ready adjustability and are willing to invest in a premium product.
- Separate rebound and low-speed compression adjusters for fine-tuning
- TUV-certified, stainless steel bodies resist corrosion
- Progressive spring rates for street comfort and track capability
Pros: Excellent damping range for daily driving and spirited driving; High build quality with long-term durability
Cons: Premium price point not for budget builders
2. BC Racing BR Series Coilovers: Best Value
The BC Racing BR series is a popular choice for Q50 owners wanting adjustable coilovers without breaking the bank. The 30-click damping adjustment provides a wide range from comfortable to firm. Many owners appreciate the included camber-adjustable top mounts, which simplify alignment after lowering. Build quality is decent for the price, with a monotube design that resists fade.
However, durability can be a concern. Some users report premature wear of the pillowball bushings, leading to clunking noises. If you drive on rough roads daily, consider replacing the top mounts with rubber ones. Also, the rear damping adjusters are at the bottom of the shock, making them hard to reach. Skip if you want a maintenance-free setup or prioritize long-term silence.
- 30 levels of damping adjustment for ride customization
- Pillowball upper mounts with camber adjustment (front)
- Monotube design for consistent damping performance
Pros: Great price-to-performance ratio; Camber adjustment helps with alignment after lowering
Cons: Some owners report noise from pillowball mounts after 20k miles
3. Tein Flex Z Coilovers: Best Comfort
Tein Flex Z coilovers are engineered for comfort without sacrificing control. The 16-click damping adjustment is fine-tuned for a smooth ride, making them ideal for daily drivers. Owners often note that the Flex Z absorbs bumps better than many competitors while still reducing body roll. The EDFC compatibility allows electronic damping adjustment from the cabin, a nice convenience feature.
However, for hardcore track enthusiasts, the damping range may feel too soft at the stiffest settings. Also, the included springs are progressive, which can feel vague during aggressive transitions. If you plan to autocross or track frequently, consider a more track-oriented setup. Skip if you want maximum cornering grip over ride comfort.
- EDFC compatible for in-cabin damping control (sold separately)
- Powder-coated body resists rust
- Separate height and preload adjustment for ride quality
Pros: Very comfortable ride quality for daily driving; Easy to adjust height and damping
Cons: Limited damping range for aggressive track use
4. Fortune Auto 500 Series Coilovers: Best for Track
Fortune Auto 500 series coilovers are designed with track performance in mind. The digressive piston valving provides firm damping that excels on smooth circuits. Owners who track their Q50 praise the predictable handling and reduced body roll. Swift springs (standard) offer consistent rates, and the optional remote reservoirs help manage heat during extended sessions.
However, the track-focused tuning makes them less comfortable for daily driving, especially on broken pavement. The ride can be jarring over potholes. Additionally, the price climbs quickly with options. If your Q50 is a daily driver that rarely sees a track, you may find the ride too stiff. Skip if comfort is a priority.
- Choice of Swift or Hyperco springs for linear response
- 24-click damping with digressive piston for track performance
- Optional remote reservoirs for additional oil capacity
Pros: Superb track performance with linear spring rates; High-quality components reduce fade
Cons: Harsh ride on rough roads for daily driving
5. Megan Racing EZ Series Coilovers: Budget Pick
Megan Racing EZ series coilovers are a low-cost option for Q50 owners on a tight budget. They offer basic 32-click damping adjustment and include camber plates, which is rare at this price point. Some owners report satisfactory results for street use, with a moderate drop and decent ride comfort.
However, durability and consistency are concerns. Multiple owner reviews note that dampers can lose performance after a year or two, and some units arrived with defects. Safety-wise, the lower build quality may not inspire confidence at high speeds. We recommend these only if you have a limited budget and are prepared for potential early replacement. Skip if you expect long-term reliability or plan to drive aggressively.
- 32-click damping adjustment for basic tuning
- Pillowball top mounts with camber adjustment
- Adjustable spring preload
Pros: Very affordable entry into coilovers; Includes camber plates for alignment
Cons: Reported quality control issues and inconsistent damping
6. HKS Hipermax IV GT Coilovers: Premium Comfort
HKS Hipermax IV GT coilovers are a premium offering that prioritizes ride quality. The damping is pre-set by HKS engineers to provide a comfortable yet controlled experience. Owners often note that the ride is smooth and compliant, with minimal harshness. The monotube design helps maintain performance during spirited driving.
However, the lack of damping adjustment means you cannot tailor the setup to your preferences or track use. If you want to tune stiffness or rebound, this is not the right choice. Also, the price is high for a non-adjustable coilover. We recommend these for daily drivers who want a refined upgrade without fussing with settings. Skip if you are an enthusiast who wants adjustability.
- Factory-tuned damping for a balance of comfort and sportiness
- Monotube shock design for consistent performance
- Height adjustable via lower bracket
Pros: Excellent ride quality out of the box; Reputable brand with good build quality
Cons: No damping adjustment for fine-tuning
7. ST Suspensions XTA Plus 3 Coilovers: German Engineering
ST Suspensions (a KW subsidiary) offers the XTA Plus 3 as a more affordable alternative to the KW V3. It features galvanized steel bodies and adjustable rebound damping, providing a good balance of comfort and control. Owners appreciate the TUV certification and the ability to use factory top mounts, simplifying installation. Ride quality is firm but livable for daily use.
However, the lack of compression adjustment limits fine-tuning compared to more expensive setups. Some owners wish for more damping range at the stiff end. If you need independent compression and rebound control, look elsewhere. Skip if you want a fully adjustable coilover for track work.
- Galvanized steel construction for corrosion resistance
- Adjustable rebound damping with 16 clicks
- TUV-approved, compatible with OEM top mounts
Pros: Solid build quality at a competitive price; TUV approval adds safety assurance
Cons: Limited to rebound-only adjustment
Frequently Asked Questions
What spring rate should I choose for my Q50 coilovers?
Spring rate depends on your driving style and goals. For daily driving, rates around 6-8 kg/mm front and 5-7 kg/mm rear are common. For track use, 8-10 kg/mm front and 6-8 kg/mm rear are typical. Heavier rates improve cornering but reduce ride comfort. Consult with the manufacturer for vehicle-specific recommendations.
Will coilovers void my Q50's warranty?
Aftermarket coilovers can void the suspension-related portion of your warranty if they cause a failure. However, the rest of the vehicle warranty remains intact. Check with your dealer and keep your original parts for reinstallation if needed.
How much should I lower my Q50 with coilovers?
A drop of 1.0 to 1.5 inches is common for a sporty look without sacrificing daily usability. Lower than 1.5 inches may cause clearance issues with speed bumps and driveways. Adjustable coilovers allow you to fine-tune the height to your preference.
Do I need camber arms with coilovers?
Lowering the Q50 increases negative camber. While some coilovers include camber-adjustable top mounts, they may not provide enough adjustment for aggressive drops. Aftermarket camber arms are recommended for lowering more than 1.5 inches to maintain proper alignment and tire wear.
Can I install coilovers myself?
Installation requires mechanical knowledge and tools like spring compressors and torque wrenches. It is a moderate difficulty job. If you are not experienced, professional installation is recommended to ensure safety and proper alignment.
Our Verdict
After comparing specifications, owner feedback, and industry standards, the KW Variant 3 coilovers stand out as the best overall choice for the Q50, offering exceptional adjustability and build quality for enthusiasts. For those seeking the best value, the BC Racing BR series provides a solid balance of performance and cost, making it our runner-up.
Last reviewed and spec-checked: June 21, 2026. We re-check our picks and listings periodically.
