Clutch Master Cylinders for WRX STI Civic FRS 350Z and 240SX

What This Clutch Master Cylinders Collection Covers

Clutch master cylinders convert pedal force into hydraulic pressure so the slave cylinder can release the clutch cleanly. This collection covers OE replacement and performance bore size upgrades for Subaru WRX STI, Honda Civic, Scion FRS, Nissan 350Z and 240SX, Acura and related manual transmission builds.

OE replacement master cylinders

OE replacement master cylinders Details

Direct replacement master cylinders restore pedal pressure when seals leak, fluid bypasses internally or the pedal sinks under load.

Performance bore upgrades

Performance bore upgrades Details

Larger bore and upgraded cylinder kits can change pedal effort and hydraulic displacement for higher clamp load clutch combinations.

Vehicle specific adapters

Vehicle specific adapters Details

Adapters and reservoir kits help integrate a chosen master cylinder into Honda, Nissan and other performance chassis.

Hydraulic system service

Hydraulic system service Details

A master cylinder service is also a good time to inspect the line, slave cylinder, release bearing and fluid condition.

Pedal feel and clutch release

Pedal feel and clutch release Details

Correct bore size, careful bleeding and matched clutch hydraulics support consistent engagement and cleaner gear changes.

Popular Clutch Master Cylinders Product Types

• OE replacement master cylinders
• Performance master cylinder kits
• Subaru WRX STI upgrades
• Honda Civic upgrades
• Honda S2000 parts
• Scion FRS upgrades
• Nissan 350Z adapters
• Nissan 240SX adapters
• Acura and Honda adapters
• Remote reservoir kits
• Master cylinder fittings
• Clutch hydraulic fluid support
• Clutch line upgrades
• Slave cylinder support
• Release bearing support

How to Choose the Correct clutch master cylinder

• Confirm exact year, model, engine and transmission
• Match bore size to the clutch and slave cylinder setup
• Check firewall mounting and pedal linkage compatibility
• Verify hydraulic line fitting style and routing
• Choose the correct reservoir or remote reservoir arrangement
• Inspect the slave cylinder before final assembly
• Replace degraded fluid and bleed the system completely
• Check clutch pedal travel and engagement after installation
• Consider an upgraded line when servicing high mileage hydraulics
• Review installation steps for trim or firewall access needs

Common Questions

What does a clutch master cylinder do?

A clutch master cylinder supports the vehicle system it was designed for. Review the product page and fitment details before ordering.

How do I confirm fitment for a clutch master cylinder?

Use the year, make, model, trim, engine and drivetrain filters, then compare product notes with the vehicle before purchase.

Can I install a clutch master cylinder at home?

Many parts can be installed by experienced enthusiasts with the correct tools. Complex transmission, exhaust or electrical work may need a qualified shop.

What should I inspect before replacing a clutch master cylinder?

Inspect related hardware, connectors, lines, mounting points and fluids so the new part is not affected by an unresolved problem.

Will this clutch master cylinder change vehicle performance?

The effect depends on the part and application. A properly matched performance component can improve response, reliability or service access.

Do I need additional parts with a clutch master cylinder?

Some installations need seals, fasteners, fluids, wiring, hardware or calibration. Check the product page and installation instructions first.

How do I choose the correct clutch master cylinder?

Match the product to the vehicle, intended use, supporting modifications and manufacturer specifications rather than selecting by appearance alone.

Are these Clutch Master Cylinders products covered by a warranty?

Manufacturer warranty coverage varies by product. Keep order information and review the individual product page for the applicable terms.

How quickly do Clutch Master Cylinders orders ship?

Many stocked orders ship quickly from a warehouse. Availability and processing details are shown during checkout and on the product page.

Can Black Ops Auto Works help with clutch master cylinder selection?

Yes. The Black Ops Auto Works team can help review fitment and supporting parts before you place an order.

Why Buy Clutch Master Cylinders from Black Ops Auto Works

Black Ops Auto Works stocks 60 Clutch Master 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 components, clutch covers, clutch discs, clutch forks, single disc clutch kits, multi disc clutch kits, clutch lines, release bearings.