Upgrading the suspension on your Honda S2000 is one of the most impactful modifications you can make. The factory setup prioritizes a balance of comfort and handling, but aftermarket options from KW, Bilstein, and Ohlins unlock the car's true potential. A well-chosen coilover or damper kit transforms turn-in response, reduces body roll, and improves tire contact with the road, whether you're chasing lap times or perfecting a canyon carve. This comprehensive guide covers everything from selecting the right system to installing and tuning it for your driving style.

Why Upgrade Your S2000 Suspension

The S2000 is renowned for its high-revving engine and near-perfect weight distribution, yet its suspension design dates back two decades. The double-wishbone geometry is excellent, but the original dampers and springs were tuned for a broad audience. After 80,000+ miles, OEM components often sag, fade, or become inconsistent. Upgrading delivers:

  • Reduced body roll – Stiffer springs and better damping control keep the chassis flat through corners.
  • Improved ride quality – Modern monotube designs absorb harsh impacts better than aging twin-tube shocks.
  • Adjustable ride height – Customize the center of gravity and stance for track or street.
  • Rebound and compression tuning – Fine-tune balance for different tires, surfaces, and driving styles.
  • Long-term durability – Corrosion-resistant materials and rebuildable cartridges extend service life.

Choosing the Right Suspension: KW, Bilstein, and Ohlins

Each brand brings a distinct philosophy. Your choice depends on intended use, budget, and desired adjustability.

KW Suspensions

German-engineered KW coilovers are famous for their inox-line stainless steel bodies (no rust) and twin-tube technology with separate gas chambers. The KW Variant 3 offers independent rebound and low-speed compression adjustment, making it ideal for dual-purpose street/track cars. KW Variant 2 provides rebound-only adjustment for street-focused drivers. Ride quality remains compliant even at aggressive spring rates.

Official KW Suspensions Website

Bilstein

Bilstein is synonymous with monotube gas-pressure technology. Their B16 PSS10 coilover system features ten click adjustments for rebound and compression simultaneously. Known for incredible durability and a progressive spring rate that suits daily driving, Bilsteins are a favorite for weekend warriors who want predictable handling without constant tinkering. The B14 offers height adjustment only for a simpler, budget-friendly option.

Official Bilstein Website

Öhlins

Öhlins brings DFV (Dual Flow Valve) technology to the S2000. This design allows oil to bypass the main piston, so low-speed comfort improves while high-speed damping remains firm. The result is a suspension that simultaneously offers supple daily ride and track-ready control. Öhlins Road & Track coilovers come with separate height and damping adjusters (rebound and compression independent) and are rebuildable. They are the premium choice for serious enthusiasts.

Official Öhlins Website

Installation Preparation

Before touching a wrench, assemble the correct tools and work in a safe environment. A two-post lift is ideal, but a high-quality floor jack and four jack stands (rated at least 2 tons each) work well. Never rely on the jack alone.

Essential Tool List

  • Socket set (metric, 10mm–22mm, including deep sockets)
  • Combination wrenches (10mm–22mm)
  • Torque wrench – beams or click-type, range 20–150 lb-ft
  • Spring compressor (if using individual springs and dampers vs. pre-assembled coilovers)
  • Pliers and wire cutters (for brake line clips)
  • Breaker bar (½-inch drive) for stubborn bolts
  • Jack stands and wheel chocks
  • Safety glasses and mechanic gloves
  • Penetrating oil (e.g., PB Blaster) for rusted fasteners
  • Trim removal tool (for interior panels when accessing top mounts)

Sourcing the Right Parts

Some systems (like KW Variant 3) ship as complete coilover assemblies with top mounts. Others (Bilstein B16) require reusing your factory top mounts or purchasing aftermarket camber-adjustable upper hats. Öhlins includes top plates but may need separate hardware for the rear. Check the kit instructions thoroughly before disassembly.

Step-by-Step Installation Process

1. Lift and Secure the Vehicle

Park on level ground, engage the parking brake, and loosen the lug nuts while the car is still on the ground. Lift the front and rear separately using jack points under the front crossmember and rear differential. Place jack stands under the frame rails (four points) so the suspension can droop freely. Always double-check stability before sliding underneath.

2. Remove the Wheels

Take off the wheels and set them aside. If you plan to reuse the tires, mark the mounting position. Use a wire brush to clean the hub mating surface; this prevents vibration after installation.

Before removing the strut/coilover, unfasten the end links from the lower control arm. Use a 14mm or 12mm wrench depending on the brand. If the ball joint spins, use an Allen key to hold the stud. On the front, you may also need to disconnect the brake line bracket from the strut body to avoid damaging the hose.

4. Remove the Old Damper Assembly

For the front: support the lower control arm with a jack (just enough to take load off). Remove the two lower bolts (17mm or 19mm) that attach the strut fork to the control arm. Then, inside the engine bay, remove the three nuts (12mm or 14mm) holding the top mount. Carefully lift the strut out. On the rear, you must unbolt the lower knuckle bolt (usually 17mm) and the top mount nuts accessed behind the interior trim panels.

Pro tip: If the lower bolt is seized, apply penetrating oil and let it soak for 15 minutes. Use a breaker bar, not an impact gun, to avoid rounding the nut.

5. Prepare the New Suspension

If your kit came with separate springs and dampers, use a spring compressor to safely assemble them. For pre-assembled coilovers, you simply adjust the lower spring perch to your desired ride height (note: do not preload excessively – follow manufacturer’s recommended range). Install any included top mounts or transfer your original ones if reuse is required. Torque the center nut of the top mount to spec (typically 35–45 lb-ft for S2000).

6. Install the New Assembly

Insert the new coilover or strut into the wheel well. Align the top mount studs with the chassis holes and hand-tighten the nuts. Then connect the lower mounting point(s). For front: reattach the strut fork and tighten bolts to 80–100 lb-ft. On rear: attach the knuckle bolt and torque to 80–90 lb-ft. Reconnect sway bar links with new hardware if provided, torquing to the factory spec (approx. 30 lb-ft). Don't forget to reattach brake line brackets or ABS sensor clips.

7. Adjust Ride Height (Before Final Torque)

Now is the time to set ride height. The S2000’s factory ride height is around 26.5 inches from the center of the wheel to the fender arch. A common drop is 0.5 to 1.5 inches. Measure both sides and adjust the spring perches equally. Keep in mind that after lowering, you may need a front camber kit to bring alignment back into spec. Set the damping adjustments to the recommended baseline (e.g., KW V3: 12 clicks from full stiff for rebound, 6 clicks for compression).

8. Final Torque and Tighten All Fasteners

With the car still on jack stands, tighten every bolt to the manufacturer's specifications using a torque wrench. Pay special attention to control arm bolts, top mount nuts, and sway bar links. Over-tightening can strip threads or crack bushings; under-tightening leads to dangerous play.

9. Lower and Settle

Reinstall wheels, lower the car to the ground, and bounce the suspension several times to settle it. Then roll the car forward and backward a few feet to let the suspension find its static position. Only then should you tighten the control arm bolts at ride height – otherwise the bushings will be preloaded and fail prematurely. With the car on the ground, torque the lower control arm bolts to 80–90 lb-ft.

Post-Installation: Alignment and Tuning

After any suspension change, a professional alignment is mandatory. The S2000 is sensitive to alignment settings. Start with these ballpark figures:

  • Camber: Front -2.5° to -3.0° (track), -1.5° to -2.0° (street). Rear -2.0° to -2.5° (track), -1.5° (street).
  • Caster: 5.5° to 6.5° (positive).
  • Toe: Front slight toe-out for turn-in (0.05–0.10° total), rear slight toe-in for stability (0.10–0.15° total).

Adjust damping using a systematic approach: start at manufacturer's recommended clicks, drive a familiar road, change settings one corner at a time. For Öhlins DFV, a good baseline is 12 clicks from full stiff for rebound, 15 clicks for compression. KW V3 users often prefer 10–14 clicks rebound and 6–8 clicks compression.

Maintenance Tips

Aftermarket coilovers require periodic inspection:

  • Check for leaks around the damper shaft seal every 6 months.
  • Clean the threaded spring perches and apply anti-seize annually to prevent corrosion.
  • If you track the car, consider a rebuild every 20,000–30,000 miles (Öhlins and KW offer rebuild services).
  • Retorque top mount nuts after first 500 miles; they sometimes settle.

Common Mistakes to Avoid

  • Not preloading bushings: Always tighten rubber bushings with the car on the ground, not in the air.
  • Over-lowering: Dropping more than 1.5 inches often causes bump steer and bottoming out. Maintain at least 3 inches of shock travel.
  • Ignoring bump stops: If you must cut them, do so only by 1/4 inch at a time to avoid metal-on-metal contact.
  • Skipping the alignment: Even a perfect install is compromised without correct geometry.

External Resources

Conclusion

Upgrading your S2000 suspension with KW, Bilstein, or Öhlins is a rewarding project that transforms the car’s character. Each brand offers a distinct balance of comfort, adjustability, and performance. By following this detailed installation guide, you can achieve a safe, precise fit that maximizes the chassis’s potential. Take your time, use the right tools, and don’t skip the alignment. Your S2000 will reward you with sharper responses, greater confidence, and a deeper connection to the road.