If you own an Acura NSX (NA1 or NA2) and are looking to upgrade the suspension, KW Suspensions offers some of the most respected coilover systems on the market. Known for precision engineering and track-proven performance, KW parts can transform the handling of the NSX without sacrificing daily comfort. This guide covers the different KW coilover models available for the NSX, their key features, and what to consider when choosing the right set for your driving style.
Understanding KW Coilover Lines for the NSX
KW offers several coilover series that fit the Acura NSX. Each line targets a different balance of comfort, adjustability, and track capability.
KW Variant 1 (V1)
The KW V1 is the entry-level coilover, designed for drivers who want a sportier ride with height adjustability but no separate damping adjustment. The dampers are fixed at KW’s optimized setting, which is stiffer than stock but still comfortable for daily driving. The stainless steel body is corrosion-resistant, and the threaded shock body allows for individual front and rear height adjustment (within a range of about 0.5 to 1.5 inches lower than stock). The V1 is a straightforward, reliable choice for street-focused NSX owners who want a lowered stance and improved handling without fiddling with settings.
KW Variant 2 (V2)
The KW V2 adds separate rebound damping adjustment (16 clicks) while keeping compression fixed. This allows fine-tuning of the ride quality and control over bumps. The NSX benefits greatly from adjustable rebound, as it can help balance the car’s mid-engine weight transfer. The V2 is a step up from V1 for those who want more control over the car’s behavior on varying road surfaces. It remains daily-friendly but offers better handling precision for spirited drives or occasional autocross.
KW Variant 3 (V3)
The KW V3 features independent adjustment of rebound and low-speed compression damping (both with 16 clicks). This is the most popular choice for NSX owners who want to dial in the suspension for both street and track use. The low-speed compression adjuster allows you to control body roll and pitch without affecting high-speed bump absorption. For the NSX, this means you can set the car up to be compliant over bumps while staying flat through corners. The V3 also includes KW’s patented Twin Tube construction, which provides a wide range of damping force and long service life.
KW Clubsport
The KW Clubsport is a dedicated track coilover with motorsport-grade features. It uses a monotube damper design with independent rebound and compression adjustment (high- and low-speed compression separate). The Clubsport also includes adjustable top mounts with camber adjustments, which are critical for aligning the NSX for track use. Spring rates are higher (typically around 670/1300 N/mm front/rear for the NSX) to control the car’s weight transfer aggressively. This system is intended for track-day or competition use and may be too stiff for daily driving. It is not recommended unless you primarily drive on smooth roads or race tracks.
Key Considerations for NSX Suspension Selection
Spring Rates and Ride Height
The NSX has a unique chassis, and not all coilovers are engineered to work properly with its suspension geometry. KW specifies spring rates that complement the car’s weight distribution (42% front, 58% rear). The V1, V2, and V3 use progressive springs on the front and linear on the rear to balance compliance and control. The Clubsport uses linear springs front and rear. Ride height can be lowered 20-50mm depending on the kit, but lowering too much can upset the NSX’s suspension kinematics, especially the front tie-rod angle. KW kits are designed to maintain adequate bump travel even at lower heights.
Compatibility with NSX Model Years
KW suspension parts are intended for the first-generation NSX (1990-2005). There are differences between the 3.0L and 3.2L cars (especially in weight and subframe mounting points), but KW coilovers are typically interchangeable across all years. However, it is crucial to verify fitment with your specific VIN or model year when ordering. The front strut tops may require the use of aftermarket camber plates if you desire additional camber adjustment beyond the stock slots, except for the Clubsport which includes them.
Installation and Alignment
Installing KW coilovers on an NSX is a straightforward job for a competent mechanic, but it does require removing the factory suspension components. After installation, a proper alignment is essential. For the NSX, the factory alignment specs are conservative; with KW coilovers, you can achieve more aggressive camber and caster settings for improved turn-in and grip. Expect to pay for a professional alignment with corner weighting if you want the best results from the adjustable damping (especially on V3 or Clubsport).
Maintenance and Warranty
KW coilovers are serviceable. The dampers can be rebuilt, and the threaded bodies are replaceable. Kits come with a 5-year warranty against manufacturing defects (check with your supplier for details). The stainless steel construction resists corrosion, but it’s wise to clean the adjustment knobs periodically if you live in snowy or salty regions.
Comparing KW Models for the NSX
| Model | Damping Adjustability | Best For | Daily Drivability | Price Range | |-------|-----------------------|----------|-------------------|-------------| | V1 | None (fixed) | Lowered look, improved handling | Very good | $ | | V2 | Rebound only | Street + occasional track | Good | $$ | | V3 | Rebound + Low-speed compression | Street & track hybrid | Good with tuning | $$$ | | Clubsport | Rebound + High/low-speed compression | Competition track | Poor (stiff) | $$$$ |
Note: Prices vary by supplier. Typically, the V3 is the most popular choice for NSX owners who want a dual-purpose suspension.
Final Recommendation
For the vast majority of NSX enthusiasts, the KW V3 offers the best balance of performance and comfort. It gives you the control to fine-tune the ride for both canyon carving and daily commuting. If your NSX is strictly a track car and you have other transportation, the Clubsport will shave seconds off lap times but at the cost of ride quality. The V1 is a solid budget option if you just want a lower stance and a firmer feel without adjustability. The V2 is a middle ground but is often overlooked because the V3’s added compression adjustment is worth the extra for such a precision sports car.
Always purchase from an authorized KW dealer to ensure you receive genuine parts with full warranty support. Prepare to invest in a proper alignment after installation to get the most from your new suspension. With the right KW setup, your NSX will handle better than new and provide years of driving pleasure.