Spec 92-95 Porsche 968 Flywheel - Steel
The SPEC SP86S is a billet steel flywheel for the 1992-1995 Porsche 968. It is aimed at the 968 owner whose factory dual-mass flywheel is rattling, clunking or vibrating and who wants a durable single-piece replacement rather than another sprung unit. At 28 lb it keeps much of the rotating mass the 3.0L four-cylinder is used to, so the car still idles and pulls away from a stop calmly. That is the main reason to choose steel over SPEC's lighter aluminum SP86A.
The 968 kept the front-engine, rear-transaxle layout of the 944, with the clutch at the engine end of the torque tube. Porsche gave the 968 a dual-mass flywheel as part of its powertrain update, along with VarioCam timing. The two halves of that flywheel are joined by springs that soak up the big firing pulses of a large four-cylinder before they reach the long drive shaft and transaxle. When those springs or the center bearing wear, the halves move against each other and the flywheel starts to knock. The SP86S replaces the whole assembly with one solid steel piece. It removes the wear parts, and its higher mass compared with aluminum helps smooth idle and low-speed driving.
Many 968 noises come from the torque tube bearings, engine mounts or transaxle rather than the flywheel. Note whether the noise follows engine speed or road speed; flywheel and clutch noise tracks engine speed and changes with the pedal. Our guide to symptoms shops often misdiagnose covers how to separate those. A slipping clutch is a separate fault that our slip diagnosis guide walks through. With the transaxle and torque tube moved back, rock the two halves of the dual-mass flywheel by hand; noticeable free play or roughness confirms it is worn.
SPEC lists the SP86S for the Porsche 968, 1992-1995. It does not fit the 944, 944S2 or 944 Turbo, which use their own flywheels, such as the SPEC steel flywheel for the 944S and S2. The 968 was built with both six-speed manual and Tiptronic gearboxes; this flywheel is for manual cars only. If your car has had a previous clutch conversion, match what is fitted now or send us your year and VIN. More drivetrain components are in our hard parts section.
| Brand | SPEC |
| Part number | SP86S |
| Fits | Spec 92-95 Porsche 968 Flywheel - Steel |
| Vehicle fitment | Porsche 968 (1992-1995) |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
SPEC lists it for the 1992-1995 Porsche 968 with a manual gearbox. It is not for Tiptronic cars or for any 944 model.
The steel SP86S weighs 28 lb and gives calmer idle and easier launches. SPEC's aluminum SP86A weighs 15 lb and revs faster but makes the car more sensitive pulling away. For a street 968, steel is the easier choice.
Its springs and center bearing wear out and cause knocking and vibration. A single-mass steel flywheel has no wear parts besides the friction face, which can be resurfaced.
Use a clutch made for a single-mass flywheel. SPEC's 968 range starts with the Stage 1 SP331, rated 415 ft-lb. Ask us and we will confirm the right kit for your car.
You may hear some gear rattle at idle in neutral, which is normal for a single-mass flywheel and does not mean a fault.
