Next Level Performance
July 25, 2026 • 11 min read
The best BMW M5 E39 coilovers we sell are the KW Variant 3 (V3) kit, and for the 2000–2003 S62 super-sedan it is the suspension upgrade that finally lets the chassis match the engine. The E39 M5 left the factory with 394 hp from a 4.9L V8 but rode on softly-sprung dampers tuned for autobahn comfort. The KW V3 (part number 35220018) is a two-way adjustable, stainless-steel coilover system that drops the car up to 2.6 inches, dials in body control, and—critically for a 24-year-old chassis—replaces tired OEM struts that are almost certainly worn out. In this review we cover the exact specs, the ride-height range, install notes, and the supporting mods that keep an S62 healthy.
Our Verdict
The KW V3 is the definitive coilover for the E39 M5—independent rebound and compression control, a stainless body that outlives the car, and a 1.4–2.6 in drop that transforms the S62 without wrecking ride quality.
If you want one suspension that handles a Sunday canyon run and a 600-mile highway trip on the same setting, this is it. Budget-minded owners can start with Koni Sport dampers and lowering springs, but the V3 is the endgame.
Shop Our Top Pick →The BMW M5 E39: Why the S62 Super-Sedan Needs a Coilover
The BMW M5 E39 is a naturally aspirated V8 super-sedan built from 1998 to 2003 (sold in the US for the 2000–2003 model years). Under the hood sits the S62B50: a 4.9L, 32-valve DOHC V8 making 394 hp at 6,600 rpm and 369 lb-ft at 3,800 rpm, backed exclusively by a six-speed manual. At roughly 3,968 lb, the E39 M5 hits 60 mph in about 4.8 seconds and was electronically limited to 155 mph.
Here is the problem in 2026: BMW tuned the factory suspension for high-speed autobahn comfort, not sharp turn-in, and every US E39 M5 is now more than 20 years old. Original dampers sag, top mounts crack, and the car floats over undulations. That is why a coilover is the single highest-impact chassis upgrade for these cars—it restores body control the day it goes on and fixes two decades of wear at the same time. At NLP Performance, the coilover our E39 M5 customers ask for by name is the KW Variant 3.
KW V3 inox-line strut assembly for the E39 M5.
KW V3 Coilover Kit for the E39 M5: What You Get
The KW Variant 3 (KW part number 35220018) is a two-way adjustable coilover system engineered specifically for the E39 M5 Sedan. "Two-way" means the low-speed rebound and low-speed compression damping are adjusted separately—16 clicks of rebound and 12 clicks of compression—so you can tune ride comfort independently from body control. That separation is what distinguishes the V3 from single-adjustable coilovers, which force one compromise setting.
KW V3 Key Specifications
The complete KW V3 kit as shipped for the E39 M5.
Adjustability: One Kit, Two Personalities
Because rebound and compression are independent, you can set the V3 soft on rebound for a settled highway ride, then firm up compression before a canyon run to control dive and squat under the S62's torque. KW's patented valving keeps the high-speed damping (the range that governs safety over sharp bumps) fixed, so the adjustments you make never compromise stability. In practice, most of our E39 M5 customers land near the middle of the rebound range and slightly firmer on compression.
Build Quality: Stainless That Outlives the Car
KW builds the V3 with its inox-line stainless-steel strut housings rather than painted or galvanized steel. On a 20-plus-year-old chassis that matters: the original E39 dampers corrode and seize, while the stainless bodies resist rust and keep the threaded collars turning for future height changes. The kit is TUV-approved in Germany, and KW backs it with a limited lifetime warranty. It is a buy-once component.
Independent rebound and compression adjusters on the KW V3.
E39 M5 Suspension Options Compared: KW V3 vs Koni Sport
There are two realistic paths to fix E39 M5 suspension: a full coilover like the KW V3, or adjustable dampers such as the Koni Sport (Yellow) paired with lowering springs. The coilover gives you ride-height and two-way damping control in one system; the damper-plus-spring route is cheaper up front but fixes your drop to whatever the springs dictate and only adjusts rebound. Here is how they stack up on the specs that decide the buy.
| Suspension Option | Type | Adjustability | Drop | Price |
|---|---|---|---|---|
| KW V3 Coilover KitTop Pick | Full coilover (2-way) | Height + 16-click rebound + 12-click compression | 1.4–2.6 in F / 0.8–2.0 in R | $3,834.00 |
| Koni Sport (Yellow) Damper | Adjustable damper (per corner) | Rebound only (manual, off-car) | Set by paired lowering springs | $206.26 |
KW V3 damper unit—full height and two-way damping control.
The takeaway: the Koni Sport (Yellow) damper is an excellent value if you already run good lowering springs or want to refresh one axle, but it adjusts rebound only and must be set with the shock off the car. The KW V3 does everything on the vehicle and adds full height adjustment—which is why it is our top pick for a do-it-all E39 M5.
Ride Height and Corner Balancing on the E39 M5
The KW V3 lowers the E39 M5 roughly 1.4 to 2.6 inches (35–65 mm) front and 0.8 to 2.0 inches (20–50 mm) rear. For a street car we recommend a moderate 1.2–1.5 inch drop: it sharpens the stance and lowers the center of gravity without introducing bump-steer or rubbing on the M5's staggered 18-inch wheels. After setting height, corner-balance the car and get a four-wheel alignment—target a mild negative camber and factory-spec toe. Skipping that step is the most common mistake we see and it undoes the handling gain.
Threaded collars allow continuous ride-height adjustment.
Supporting Mods: Keep the S62 Healthy and Fueled
A coilover sharpens the chassis, but the S62 V8 has two well-known service items worth addressing while the car is on the lift. Both are cheap insurance relative to the value of a clean E39 M5.
S62 Connecting-Rod Bearings
Like BMW's other high-revving M engines, the S62 is prone to connecting-rod bearing wear. Refreshing them with a race-grade King set (part CR8063XP) and new rod bolts restores correct oil clearance and prevents the catastrophic failure mode of a spun bearing. It is the single most important preventive job on a high-mileage S62.
High-Flow Fuel for Built Motors
Owners going beyond stock—forced induction or a stroker S62—need injectors that can keep up. The DeatschWerks 2400cc set is a bolt-in high-flow upgrade sized for serious horsepower builds, well past what the factory 394-hp tune demands. For a stock or lightly modified street S62 the OEM injectors are fine, but for a power build these are the E39 M5-specific answer.
Koni Sport (Yellow) adjustable damper—the budget suspension path.
Pros and Cons of the KW V3 on the E39 M5
What We Like
- + Independent 16-click rebound and 12-click compression let you separate ride comfort from body control
- + Inox-line stainless struts resist corrosion far better than the E39's original galvanized units
- + TUV-approved, continuously threaded height adjustment from 1.4 to 2.6 in up front
- + Replaces 20-plus-year-old OEM dampers in one purchase
Things to Consider
- – A proper corner-balance and alignment after install is strongly recommended (extra shop time)
- – Fits the E39 M5 Sedan only—not 540i or Touring wagon
- – Premium price versus a springs-and-dampers combo
Frequently Asked Questions
Are the KW V3 the best coilovers for a BMW M5 E39?
For most E39 M5 owners, yes—the KW Variant 3 is the best all-around coilover for the 2000–2003 M5. It is a two-way system with 16-click rebound and 12-click compression adjustment, so you can run a compliant highway setting and a firmer canyon setting on the same hardware. The stainless inox-line body also outlasts the car. Owners chasing a track-only setup may prefer a 3-way race coilover, but for a street-and-canyon S62 the V3 is the sweet spot.
How much does the KW V3 lower an E39 M5?
The KW V3 (part 35220018) lowers the E39 M5 approximately 1.4 to 2.6 inches (35–65 mm) at the front and 0.8 to 2.0 inches (20–50 mm) at the rear. Because the height is set on a continuously threaded strut body, you can dial in any drop within that window rather than being locked to a fixed spring height. Most street owners settle around 1.2–1.5 inches to keep the S62's ride quality and avoid rubbing on staggered wheels.
What engine does the E39 M5 have and how much power does it make?
The BMW M5 E39 uses the S62B50, a naturally aspirated 4.9L (4,941 cc) DOHC V8 with double-VANOS and individual throttle bodies. It produces 394 hp at 6,600 rpm and 369 lb-ft of torque at 3,800 rpm, revs to a 7,000 rpm redline, and drives the rear wheels through a Getrag 420G six-speed manual. That is enough to run 0–60 mph in about 4.8 seconds, which is exactly why the chassis benefits from a proper coilover.
Do E39 M5 rod bearings need to be replaced?
The S62 V8 in the E39 M5 is known for connecting-rod bearing wear, and preventive replacement is a smart idea, especially past 60,000–100,000 miles or before adding power. Upgrading to a race-grade set such as the King S62 connecting-rod bearing set (part CR8063XP) with fresh rod bolts restores proper oil clearance and cheap insurance against a spun bearing. It is one of the most common S62 maintenance jobs we advise on.
Is the E39 M5 a good car to modify?
Yes. The E39 M5 is widely regarded as one of the greatest sport sedans ever built, and with only about 20,482 produced worldwide (2000–2003 for the US market) it is also increasingly collectible. Its balanced rear-drive chassis and torque-rich S62 respond well to suspension, supporting fuel-system, and engine-refresh work. Start with a coilover like the KW V3, keep the drivetrain healthy with rod bearings, and the car stays both fun and reliable.
Can I install KW V3 coilovers on the E39 M5 myself?
Experienced DIYers can install the KW V3 on an E39 M5 with hand tools, a spring compressor for the rear, and a lift or jack stands, typically in a weekend. The bigger requirement is what comes after: set the ride height evenly side-to-side, then get a corner balance and a four-wheel alignment. Skipping the alignment will chew tires and dull the handling gains the coilover is designed to deliver.
Ready to Transform Your E39 M5?
Shop the KW V3 coilover kit and thousands more performance parts at NLP Performance.
Shop CoiloversFree shipping on select brands • Located in Tampa, FL
