Acura NSX Clutch: Exedy Hyper Single Install Guide

Upgrading the Acura NSX clutch is the single best way to make Honda's aluminum supercar hold power reliably, and the Exedy Hyper Single is the kit our Tampa, FL shop reaches for first. The Exedy Hyper Single is a single-plate performance clutch designed for the 1991–1996 Acura NSX (C30A 3.0L V6, 5-speed transaxle) that raises torque capacity with a 6-puck cerametallic disc while keeping a streetable, sprung-hub feel. This guide walks through why the factory clutch runs out of grip, what the Exedy kit includes, and exactly how to install it — with the specs and part numbers you need to order the right parts the first time.

Why Upgrade Your 1991–1996 Acura NSX Clutch?

The factory NSX clutch is a fine street unit, but it was engineered around a specific output window. The 1991–1996 NSX runs the C30A 3.0L DOHC VTEC V6 rated at 270 hp at 7,100 rpm and 210 lb-ft at 5,300 rpm through a 5-speed manual transaxle (the 3.2L C32B and 6-speed did not arrive until the 1997 NA2 cars). At roughly 3,010 lb, the stock combination is happy on the OEM organic disc — until you add power or heat.

The trouble is that the NSX is a magnet for modification. Bolt-on superchargers, headers, and standalone tunes routinely push a C30A well past its factory torque figure, and that is exactly where the original single-mass organic clutch starts to slip. Track-day heat cycling makes it worse: once the friction material glazes, the clutch gives up torque even at stock power. In our Tampa shop we see the same failure pattern again and again — a healthy engine that simply cannot put its torque to the wheels because the clutch is the weak link.

A performance clutch fixes that in two ways: a higher-clamp-load pressure plate and a more aggressive friction material (here, cerametallic). The Exedy Hyper Single adds both while keeping a sprung center disc, so you gain torque capacity without turning your supercar into an on/off track-only pedal.

There is a second reason NSX owners upgrade: parts availability. These cars are 30-plus years old, and a slipping clutch is often overdue for replacement anyway. Since the transaxle has to come out regardless, stepping up from a worn OEM organic disc to the Exedy Hyper Single costs only the price difference in parts — the labor is the same either way. That is why we steer NSX owners toward a performance clutch rather than another factory-style disc that will simply wear out again at stock torque levels. If you are chasing more than the Hyper Single can hold, Exedy also builds twin- and triple-plate multi-disc setups, but for the vast majority of street and light-track C30A cars the single-plate is the right balance of grip, drivability, and cost.

Exedy Hyper Single Clutch: Specs, Features & Price

The Exedy Hyper Single Series is built for moderately modified cars — the sweet spot for a bolt-on or lightly built NSX. Unlike rebuilt-OE offerings, Exedy engineers its racing and performance clutches from the ground up; the company supplies all six factory teams in Japan's top motorsport series. The NSX kit (part number HH04SD1) is a complete flywheel-and-clutch package, not just a disc-and-cover set.

Key hardware includes a purple-anodized forged aluminum cover, a pressure plate with turbine-style vanes that pull cooling air across the friction surface, an included chromoly steel flywheel, and a 6-puck cerametallic disc with a sprung center hub. The sprung hub is the detail that keeps it civil: it dampens driveline shock so you get far less gear rattle and shudder than a solid-hub race disc, while the cerametallic pucks bite hard enough for repeated hard launches. It is a pull-type cover, matching the factory NSX release setup. Expect a firmer pedal and a crisper, more mechanical take-up than stock — a fair trade for the added clamp load.

The Accessory Kit Every NSX Clutch Job Needs

Never bolt a fresh clutch to tired bearings. When the transaxle is out you have one-time access to the release (throwout) bearing and pilot bearing, and reusing worn units on a new clutch is the fastest way to create a noise complaint that sends you right back under the car. Exedy's Hyper Series Accessory Kit (part number HCAK102) bundles the exact wear parts for the job: a new release bearing, a new pilot bearing, and a clutch alignment tool so you can center the disc without guesswork.

At around $260 next to a roughly $1,560 clutch, it is inexpensive insurance. We treat it as mandatory on every NSX clutch install we do, and we recommend you order both parts together.

Exedy NSX Clutch Package at a Glance

Here is the complete two-part package we quote for a 1991–1996 NSX clutch job. Order both so the transaxle only comes out once.

How to Install the Exedy Hyper Single Clutch on an NSX

Replacing the clutch on a 1991–1996 Acura NSX is a transaxle-out job, and the mid-engine layout makes access tight, so budget roughly 8–12 hours. A lift, a transmission jack, and the factory service manual make the difference between a smooth day and a frustrating one. Always torque fasteners to the values in your NSX service manual — the steps below are the workflow, not a substitute for those specs.

Tools and preparation

You will need a two-post or four-post lift, a transmission jack, metric sockets and a torque wrench, a clutch alignment tool (included in the HCAK102 kit), fresh manual transaxle fluid (MTF), and a small amount of high-temperature moly grease for the input-shaft splines. Disconnect the battery before you start, and let the exhaust cool completely.

Remove the transaxle

Raise the car, remove the rear under-tray and access panels, and drain the transaxle fluid. Remove the intake and airbox for clearance, then disconnect the shift cables, clutch hydraulic line, starter, ground straps, and speed-sensor plug. Unbolt both driveaxles and support them aside. Support the transaxle on the jack, remove the mount bolts and bellhousing bolts, and carefully separate the transaxle from the engine — keep it square to the input shaft so you do not hang its weight on the disc.

Install the new clutch

With the old clutch off, drive out the old pilot bearing and press in the new one from the HCAK102 kit. Bolt the Exedy chromoly flywheel to the crank, torquing the bolts in a star pattern to the factory spec. Hang the new cerametallic disc on the alignment tool — note the "flywheel side" marking so it faces the correct way — and hold it against the flywheel. Set the Exedy cover over the disc and dowels, then tighten the cover bolts gradually in a criss-cross pattern so the diaphragm seats evenly. Lightly grease the input-shaft splines, slide the new release bearing onto the fork, and reinstall the transaxle by hand until the bellhousing meets the block without forcing it.

Reassemble, refill, and bleed

Reverse the removal steps: reconnect the axles, starter, shift cables, and hydraulic line, then refill the transaxle with fresh MTF to the correct level. Bleed the clutch hydraulic circuit until the pedal is firm and free of air. Reinstall the airbox, under-tray, and battery. Before you drop the car, roll it and confirm the clutch fully engages and releases through all gears.

Break-in procedure

Break in the new clutch for the first 500 miles of moderate driving before any hard use. Avoid high-rpm clutch dumps, drag launches, and long slips during this window so the cerametallic pucks can bed evenly to the flywheel and pressure plate. Proper break-in is the difference between a clutch that grips for years and one that glazes early — do not skip it.

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