Acura NSX Coilovers: KW V5 3-Way Review (1990-2005)

Shopping for Acura NSX coilovers means choosing suspension worthy of one of the greatest analog sports cars ever built. The 1990–2005 NSX (NA1 and the 2002–2005 NA2) rides on a fully independent double-wishbone chassis bolted to an all-aluminum monocoque — a platform that rewards precise damping. In our Tampa, FL shop the single most-requested upgrade for a well-sorted NSX is a proper coilover system, and the standout right now is the KW Variant 5 (V5), a three-way adjustable kit that lets you dial compression and rebound independently. This review breaks down the KW V5 against the more affordable KW V3 and a budget Bilstein B8 damper path, with real specs, adjustment ranges, and fitment for every NA1 and NA2.

Why the Acura NSX Needs a Coilover Upgrade

The Acura NSX is a mid-engine sports car with a fully independent double-wishbone suspension at all four corners, mounted to the world's first mass-production all-aluminum monocoque. Forged aluminum control arms and a curb weight of roughly 3,010–3,150 lbs give it low unsprung mass and razor-sharp turn-in from the factory. The NA1 (1990–2001) uses the 3.0L C30A VTEC V6 rated at 270 hp; the NA2 (2002–2005) steps up to the 3.2L C32B at 290 hp. It is a chassis engineered by Honda with input from Ayrton Senna, and it responds to good damping like few other cars of its era.

The catch is age. Original NSX shocks were tuned soft for road compliance, and any surviving factory damper is now 20 to 35 years old. Worn OE units float over crests, allow excess body roll, and blunt the steering the chassis is famous for. A modern coilover system does three things at once: it restores control with fresh, correctly valved damping; it lowers the center of gravity for flatter cornering; and — on adjustable kits — it lets you corner-balance and tune the car for street comfort or track grip. Because the NSX is light and precise, it shows the benefit of a quality coilover more clearly than a heavier car would. That is exactly why we steer NSX owners toward the KW lineup rather than a generic budget kit.

KW V5 Coilover Review: The Three-Way Benchmark for the NSX

The KW Variant 5 is a fully three-way adjustable coilover system that KW positions as its new damper-technology benchmark for the street-performance market. Unlike a one- or two-way kit, the V5 splits compression and rebound into independent low- and high-speed circuits. Its KW SPCLH-A (Solid Piston Compression Low- and High-speed Adjustable) and SPRLH-A (Solid Piston Rebound Low- and High-speed Adjustable) valve units each offer 13 exact clicks — 14 characteristic curves — in both the low- and high-speed range. In plain terms, you can quiet body roll and pitch with the low-speed circuits while keeping the car supple over sharp bumps and curbs with the high-speed circuits, without one setting fighting the other.

On the NSX, that separation matters. Low-speed compression tames dive under trail-braking into a corner; high-speed compression keeps a wheel from bottoming when you clip a curb or hit expansion joints on the interstate. The V5 runs a low-pressure gas range of 6 to 10 bar for cavitation-free, low-hysteresis response, which translates to consistent damping lap after lap. The strut bodies use KW's stainless-steel inox-line construction for corrosion resistance, and ride height is fully adjustable so you can set a track-friendly stance and still corner-balance the car. It is, simply, the most capable bolt-on coilover we install on this chassis.

KW V3 vs V5: Which NSX Coilover Should You Buy?

The KW V3 is the value choice and, for most NSX owners, it is all the coilover they will ever need. It is a two-way independently adjustable system: rebound and low-speed compression are set separately, using the same stainless inox-line hardware and TUV-approved engineering as the rest of the KW range. For the NSX specifically, the V3 kit carries roughly 460 lbs/in spring rates front and rear and offers a continuous lowering range of about 0.8–2.0 in up front and 0.9–2.1 in at the rear — and KW validates it on circuits including the Nurburgring Nordschleife. At around $3,700 it delivers the vast majority of the V5's on-road benefit.

So who needs the V5? Choose the three-way V5 if you run frequent track days or autocross and want to separate low-speed body control from high-speed bump absorption — the ability to firm up roll resistance without punishing the car over curbing is the V5's whole reason for existing. Choose the two-way V3 if you are a spirited street driver or occasional track-day participant who wants a premium coilover with height and damping adjustment at a friendlier price. Both bolt to any 1990–2005 NSX and both restore the tied-down feel the chassis deserves. There is no wrong answer here — only how much adjustability you will actually use.

Budget Path: Bilstein B8 Monotube Dampers

Not every NSX build needs a full coilover. If your car already runs quality lowering springs — or you simply want to refresh dead OE dampers without the coilover budget — the Bilstein B8 is the smart move. The B8 is a shortened 46mm monotube, gas-pressure damper with application-specific valving designed to pair with lowering springs and control a lowered ride height. It is firmer than an OE-style B6 and cuts body roll noticeably, but it is a fixed-valve, fixed-height damper: no click adjusters, no threaded perch. At roughly $220 per corner (front and rear are sold separately) it is by far the cheapest way to modernize NSX damping.

Think of the B8 as the honest budget answer, not a coilover competitor. You give up ride-height and damping adjustment, and you must supply your own lowering springs, but you gain a brand-new gas monotube with a proven track record and a Bilstein limited lifetime warranty. For a street NSX that lives at a fixed drop, a set of four B8s under good springs delivers a taut, well-damped ride for a fraction of a KW kit. Buy both the front and rear part numbers below to do the car.

NSX Coilover Comparison: KW V5 vs V3 vs Bilstein B8

Here is how the three NSX suspension paths stack up at a glance. The KW V5 and V3 are complete coilover kits (all four corners, springs included); the Bilstein B8 price is per corner and requires your own lowering springs. Every product links to its page for current pricing and fitment.

Installation and Setup Notes for NSX Suspension

Installing coilovers on an NSX is straightforward for a competent shop but the setup afterward is where the results are made. Plan on 4–6 hours for a full KW kit, and budget for a corner-balance and alignment once the car is at ride height. The NSX responds strongly to alignment: most street setups run modest negative camber (roughly 1.0–1.5 degrees up front) with a touch of toe-out for turn-in, while track cars go further. Because the NSX is light, do not chase the lowest possible stance — excessive drop hurts geometry and the ride the chassis was engineered to deliver. Start near the middle of KW's lowering range, then fine-tune.

For damping, begin at KW's recommended baseline clicks and change one circuit at a time. On the V5, set low-speed compression for the body control you want on turn-in, then use high-speed compression to soften impacts over curbs and sharp bumps; adjust rebound last to keep the car settled. Our team in Tampa, FL corner-balances every coilover install so both sides carry equal load — on a mid-engine car like the NSX that step is worth real lap time. Pair any of these dampers with fresh top mounts and bushings for the crispest result. Browse the full range in our suspension collection and coilover collection.