Clutch Slave Cylinders for Mustang, Camaro, WRX, EVO & Civic

What This Collection Covers

The slave cylinder converts hydraulic pressure from the clutch master cylinder into release-fork or release-bearing movement. This collection covers direct-fit replacements for import, domestic, and Jeep applications plus performance hydraulic conversion components for custom clutch builds.

External Slave Cylinders

External units mount outside the bellhousing and act on a clutch fork. Match the bore size, mounting bolt pattern, pushrod length, hydraulic port, and vehicle application before ordering.

Buying Notes

Confirm the exact application and installation requirements before ordering. The product page fitment details and manufacturer instructions should guide final selection.

Concentric Slave Cylinders

Concentric slave cylinders mount around the transmission input shaft and combine the slave cylinder with the release bearing. Bellhousing depth, clutch finger height, and proper air-gap measurement are critical to prevent overtravel or a release problem.

Buying Notes

Confirm the exact application and installation requirements before ordering. The product page fitment details and manufacturer instructions should guide final selection.

Hydraulic Conversion Kits

Hydraulic conversion kits pair a master cylinder, line, fittings, and slave or release bearing for vehicles changing from mechanical linkage. Select a kit engineered for the transmission, bellhousing, clutch, and pedal configuration.

Buying Notes

Confirm the exact application and installation requirements before ordering. The product page fitment details and manufacturer instructions should guide final selection.

Bleeding and Service

A soft pedal, poor release, visible fluid leak, or clutch engagement near the floor can point to a hydraulic issue. Use fresh fluid specified for the system and bleed all air from the line after any cylinder or hose service.

Buying Notes

Confirm the exact application and installation requirements before ordering. The product page fitment details and manufacturer instructions should guide final selection.

Top Brands

• Exedy. OE-style clutch hydraulics and replacement components
• Wilwood. Compact pull-type and push-type performance slave cylinders
• Clutch Masters. Billet and application-specific hydraulic clutch parts
• McLeod. Hydraulic conversion kits and release systems for classic domestic builds
• Tilton. Race-focused hydraulic release bearings and clutch actuation hardware
• Sachs. OE-quality clutch hydraulic components
• OMIX. Jeep clutch and service replacement parts
• OS Giken. High-performance clutch release assemblies
• Centerforce. Performance clutch hardware and conversion support
• ACT. Clutch components for sport compact and domestic applications
• RAM Clutches. Hydraulic release bearings and performance clutch parts
• Modern Driveline. Hydraulic conversion systems for swaps
• Speedway Motors. Universal hydraulic clutch components
• Dorman. Replacement hydraulic service parts
• LUK. OE clutch components and hydraulic release systems

How to Choose the Correct Part

• Confirm year, make, model, transmission, and engine
• Identify whether the vehicle uses an external or concentric slave cylinder
• Match the cylinder bore and hydraulic line fitting type
• Verify bellhousing depth and release-bearing clearance for concentric units
• Inspect the clutch master cylinder and line for contamination or leaks
• Use the fluid grade specified for the clutch hydraulic system
• Replace worn release bearings and damaged forks during a clutch service
• Confirm pushrod length and pedal ratio for conversion kits
• Bleed the system fully before judging pedal feel
• Avoid mixing incompatible hydraulic components without a matched kit

Common Questions

What does a clutch slave cylinder do?

A slave cylinder uses hydraulic pressure from the clutch master cylinder to move the clutch fork or release bearing so the clutch can disengage.

What is a concentric slave cylinder?

A concentric slave cylinder fits around the transmission input shaft and combines the hydraulic cylinder with the release bearing inside the bellhousing.

How do I know a slave cylinder is failing?

Common signs include a soft pedal, fluid loss, hard shifting, poor clutch release, or a pedal that stays near the floor.

Should I replace the slave cylinder with the clutch?

Replacing an internal concentric slave cylinder during a clutch job is a smart preventive step because transmission removal is required to access it.

Can air in the line cause shifting trouble?

Yes. Air compresses in the hydraulic system and can reduce slave-cylinder travel, causing incomplete clutch release.

Do I need a new clutch master cylinder too?

Not always, but inspect the master cylinder and line carefully. Replacing both can prevent repeat labor when they are the same age.

How do I bleed a clutch hydraulic system?

Follow the vehicle service procedure, keep the reservoir full, and bleed until clean fluid flows without air bubbles.

What fluid should I use?

Use only the brake fluid or mineral fluid specified by the vehicle or clutch-system manufacturer.

Can I use a universal slave cylinder?

A universal cylinder can work in a custom build when bore, stroke, mounting, and linkage geometry are engineered correctly.

Why does clutch pedal engagement change after service?

Remaining air, an incorrect release-bearing gap, linkage adjustment, or a mismatched hydraulic bore can alter engagement point.

Why Buy Slave Cylinders from Black Ops Auto Works

Black Ops Auto Works stocks 50 slave cylinders SKUs with real fitment data, competitive pricing, and support from staff who build these vehicles themselves. Products are filterable by year, make, model, trim, engine, and drivetrain to confirm the correct application before ordering.

For focused shopping, browse our Clutch Kits Single, Clutch Kits Multi, Clutch Lines, Release Bearings, Wilwood and Exedy collections.