Aftermarket Clutch Kits: What You Need to Know

DIY

Engines and Components

Mark Bach

November 11, 2021

Mark Bach

November 11, 2021

Nothing matches the feeling of rowing through the gears of a powerful, manual-transmission car—especially on a twisty road. But eventually, the clutch for your manual vehicle might need some love. A clutch kit could be the answer.

A clutch is a mechanical device that links an engine and transmission. The clutch allows you to disengage the linkage, so you can shift gears—or keep the engine running while stopped. A clutch has three integral parts.

A clutch disc is a metal plate that rides on the transmission's input shaft. The disc sits between the engine's flywheel and the clutch pressure plate.

The clutch pressure plate is a spring-loaded plate that spins with the engine's flywheel. It applies pressure to the clutch disc to connect the transmission to the engine.

The clutch release bearing (or throw-out bearing) is the last part of the clutch. The release bearing is the connection between the clutch pedal and the pressure plate.

When the clutch pedal is pushed down, the bearing pulls the pressure plate and the clutch disc apart to disconnect the engine from the transmission.

Do I Need a Clutch Kit?

Over time, all three of these parts will wear out. If there's a vibration, or a spongy softy feel, when you press down the clutch pedal, you might need to repair the clutch.

A repair is even more likely if you hear a squeaking noise or a harsh rumble when shifting gears. Likewise, it's time to start looking for a clutch replacement kit if it's becoming harder to shift gears or accelerate after the clutch is let out.

A quality clutch kit will have all the pieces to restore your clutch to like-new condition.

Accessing clutch components requires removing the transmission. This may sound daunting, but many enthusiasts can do this chore even without a car lift - opens in new window or tab.. Of course, it needs to be done with safety in mind—perhaps best performed by an experienced mechanic.

How To Replace a Clutch Kit

It takes time and work to access the clutch. Therefore, it's a good idea to replace all three components at the same time. Clutch kits available on eBay Motors commonly have all the pieces necessary to replace the worn-out clutch parts.

A kit will also correctly match all the components for optimal performance and durability. Many kits will include a tool to keep all the pieces aligned during assembly.

When replacing the clutch, you should also inspect your flywheel. Look for uneven wear, corrosion, and missing gear teeth around the circumference. Some motorists might have the flywheel machined and resurfaced, but many manufacturers don't recommend that procedure. Instead, they suggest replacing the flywheel - opens in new window or tab.. Therefore, some clutch kits include a replacement flywheel as part of the package.

Which Clutch Kit Do I Need? They Come in Stages

This is a Stage 5 clutch kit and aluminum flywheel for a 2004-2005 six-speed BMW 330.

When comparing clutch kits, make sure to verify the list of included parts. And double-check that everything is made for your specific vehicle.

Some clutches have higher performance friction pads or stronger springs to assist in the clutch mechanism. In this case, the vendor might indicate the strength of the components—from Stage 1 to Stage 5. Higher numbers mean the parts are more robust, and the materials can handle higher friction.

First, consider how you like to drive. Are you slow and steady? Or do you want to push a car through its paces? The answer allows you to match the clutch kit to your driving style. A kit for an everyday commuter car rarely goes above Stage 3.

Clutch kits typically start at $100. Prices climb to several hundred dollar or more for kits using higher-grade materials.

About the author

Mark Bach

Mark C. Bach has oil in his veins and remembers feeler gauges and brake springs. He has a love for all things that move, especially old-school muscle cars. Bach writes for a variety of outlets, including Chevy Classics and FuelCurve.com, and maintains Route66pubco.com.

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This article is meant to provide general guidance only. Automotive maintenance, repair, upgrade, and installation may depend on vehicle-specifics such as make and model. Always consult your owner's manual, repair guide for specific information for your particular vehicle and consider a licensed auto-care professional's help as well, particularly for advance repairs.