Porsche 964 Coilovers: How to Install + 4 Best Kits

Installing coilovers on a Porsche 911 (964) is one of the highest-value upgrades you can make to an air-cooled 911, and it is more straightforward than most owners expect. A coilover kit for the 964 is a bolt-in, height-adjustable spring-and-damper unit that replaces the factory strut and rear shock assemblies to lower the car, tighten body control, and let you dial in ride height and alignment. Because the 964 (1989–1994) was the first 911 to switch from torsion bars to coil springs, modern coilovers — from the Ohlins Road & Track down to the H&R Street Performance kit — drop straight into the factory mounting points with no fabrication. This guide walks through the full installation, the torque and alignment numbers that matter, and how the four best 964 coilover kits compare.

Why the 964 Is Built for Coilovers

The 964 is the easiest classic 911 to fit with coilovers because it was the first to use coil springs instead of torsion bars. When Porsche launched the Carrera 4 in 1989 and the Carrera 2 in 1990, it kept the front MacPherson strut and rear semi-trailing-arm layout of earlier 911s but wrapped both ends in coil springs over telescopic dampers. That single engineering change is why a complete, threaded coilover unit bolts to the same three-nut front strut top mount and rear shock mounts the factory used — no torsion-bar removal, no spring compressors fighting a transverse bar, and no cutting.

Stock, a Carrera 2 weighs roughly 3,000 lb (about 1,350 kg) and rides on soft, comfort-biased springs with fixed-rate dampers that are now 30-plus years old. Most original Boge or Bilstein units have long since lost their gas charge, so the car floats over crests, dives under braking, and rolls through corners. A modern coilover restores damping control, drops the center of gravity 20–40 mm, and — critically — makes ride height and corner weights adjustable so you can set the car up for the street, the canyon, or a track day. For a car this valuable, that adjustability is worth far more than a set of lowering springs on tired shocks.

Tools and Parts You Need

A full four-corner 964 coilover install takes a professional shop about 5–7 hours, or 8–12 hours as a careful DIY weekend job, plus a follow-up corner balance and alignment. You do not need a spring compressor for the coilover units themselves — they arrive fully assembled — but you do need a proper lift or four jack stands, and you should never work under a car supported only by a jack. Here is the core tool and parts list our Tampa shop uses on a 964 suspension job.

How to Install Coilovers on a 964: Step by Step

Install the 964 coilovers one axle at a time, keeping the opposite corner on the ground for reference until you are ready to set ride height. Work on a level surface and always torque fasteners to the factory 964 workshop-manual values — the numbers below are the headline figures, but you should confirm every spec against the manual for your exact chassis and trim.

Step 1: Remove the front struts

The front struts come out from the top. Loosen the wheel bolts, raise and support the front of the car, and remove the wheels. Inside the front trunk, peel back the carpet to expose the three strut-tower nuts on each side. Disconnect the sway bar drop link, unclip the ABS sensor wire and brake-line bracket from the strut, and support the hub. Remove the two strut-to-hub pinch bolts, then the three top nuts, and the strut drops out the bottom. Transfer the top mount to the new coilover if your kit reuses it.

Step 2: Install the front coilovers

Set the new coilover to a sensible starting ride height before it goes in — roughly 20–30 mm lower than stock is a safe street setting. Slide the assembly up through the strut tower, start the three top nuts by hand, then reconnect the hub, sway bar link, ABS sensor, and brake line. Torque the strut-to-hub fasteners and top-mount nuts to the factory 964 spec, and set the front wheel bolts to 130 Nm (96 lb-ft). Repeat on the other side.

Step 3: Swap the rear coilovers

The rear uses a semi-trailing arm with a separate coil-over damper, so support the arm with a jack to keep it from dropping. Remove the lower shock bolt and the upper mount, pull the old unit, and install the new coilover with the lower mount loose. Do not fully torque the lower bolt until the suspension is loaded at ride height — tightening the bushings under droop pre-loads them and shortens their life. Reconnect everything, then lower the car.

Step 4: Set ride height and roll it out

With the car on the ground, roll it back and forth several times to settle the suspension, then measure fender-to-hub height at all four corners. Adjust the threaded perches until you hit your target and the side-to-side heights match within a few millimeters. A common street target for a 964 is a 20–25 mm drop from stock, which clears the fenders on OEM-size wheels and keeps the geometry sane. Now the car is ready for corner balancing and alignment.

Setting Ride Height, Corner Balance, and Alignment

Coilovers are only as good as the setup, so budget for a professional corner balance and alignment after the install. Corner balancing equalizes the diagonal (cross) weight to a target near 50% with the driver's weight simulated and roughly a half tank of fuel, which is what makes a rear-engine 911 handle predictably on both left and right corners. Skip this step and even a $5,800 Ohlins kit can feel nervous.

For alignment, a proven fast-road starting point on a lowered 964 is roughly -1.0° to -1.3° of front camber with near-zero front toe for sharp turn-in, and -1.5° to -2.0° of rear camber with a small amount of rear toe-in (about +0.10° to +0.20° total) for stability under power. Track cars run more negative camber; a comfort-first street car runs less. Always have the numbers set by an alignment tech familiar with air-cooled 911s, and re-check them after the suspension settles over the first few hundred miles.

Best Coilover Kits for the 964 Compared

We stock four coilover systems that bolt into the 964, spanning $2,205 to $5,800. All four are height-adjustable and fit the Carrera 2, Carrera 4, and RS-look chassis (Turbo/965 applications vary, so confirm fitment). The difference is in damping adjustability and how the kit is tuned — a race-oriented Ohlins or KW rewards a driver who tunes, while the H&R is a set-and-forget lowering solution.

KW Variant 3 — independent 2-way control

The KW V3 is the pick for owners who want to tune the front and rear separately. Its 16-click rebound and 12-click low-speed compression adjusters let you firm up the rear for traction without punishing front ride quality, and the stainless bodies resist the corrosion that plagues 30-year-old struts. It is the most technical kit here, and at $4,194 it undercuts the Ohlins while giving up little on a street car.

Bilstein B16 PSS10 — monotube toughness

Bilstein built the OEM dampers for countless Porsches, and the B16 PSS10 brings that monotube expertise to a fully adjustable kit. A single 10-position dial per corner covers the range from a compliant daily setting to a firm track feel, and the gas-pressure monotube design fades less on repeated hard stops. At $3,369 it is the durability-first choice.

H&R Street Performance — the value pick

If you want a lower, tighter 964 without the cost or complexity of adjustable damping, the H&R Street Performance coil over is the answer at $2,205. Its height-adjustable perches with fixed, factory-matched valving deliver a noticeably sportier stance and better body control than lowering springs on old shocks, and the setup is simpler to live with day to day.

Supporting Mods: Brakes, Sway Bars, and Springs

Coilovers transform how a 964 turns, but they also expose the rest of a 30-year-old chassis. If you are already under the car, a few supporting upgrades multiply the return on the suspension work and make a cohesive package.

For braking, GiroDisc two-piece slotted front rotors ($1,106) cut unsprung and rotating mass while improving heat capacity, and a set of Goodridge stainless brake lines ($132) firms up a spongy 30-year-old pedal for very little money. To fine-tune the balance, an H&R 24 mm front / 26 mm rear adjustable sway bar kit ($826) lets you trim understeer or oversteer independently of the coilover setting.

Not everyone needs full coilovers. If you want a mild drop on a comfort-first 964, Eibach Pro-Kit springs ($450) lower the car about an inch on your existing dampers, while the Eibach Pro-Plus kit ($963) pairs those springs with matched sway bars. And because the 964 breathes through a simple air box, a K&N drop-in filter ($65) is a cheap, reusable freshener while you are in there.