Clutch Masters MC15020-R .75" Bore Master Cylinder Kit for 2015-22 Subaru WRX /

Vehicle Fitment

• 2015-2022 Subaru WRX (2.0L, 6-Speed Manual)
• 2015-2022 Subaru WRX-STI (2.5L, 6-Speed Manual)

Features

• Billet-machined 6061-T6 aluminum master cylinder body
• .75" (0.75 in) bore size for increased clutch system pressure
• Red anodized finish for corrosion resistance and sporty look
• Deletes the OEM clutch delay valve for faster return and shift speed
• Includes stainless-steel braided line for reliability and resistance to expansion
• Adjustable push rod and billet clevis to tune clutch engagement point
• Includes adapter, jam nut, and jam nut tool for secure installation
• Designed for aggressive street driving and performance use

Specifications

• Part Number: MC15020-R
• Material: Billet 6061-T6 Aluminum
• Bore Size: 0.75"
• Finish: Red Anodized
• Line Type: -3AN stainless braided included
• Application: Works with OEM slave cylinder

Included Components

• 1x Billet Master Cylinder
• 1x -3AN Stainless Braided Line
• 1x Billet Master Cylinder Adapter + Jam Nut
• Jam Nut Tool
• 1x Adjustable Push Rod + Billet Clevis
• Banjo Fittings + Crush Washers
• Rubber Hose (for reservoir feed)

Product Description

The Clutch Masters MC15020-R master cylinder kit is a performance upgrade tailored for 2015-2022 Subaru WRX and WRX-STI models. Its .75" bore creates higher hydraulic pressure in the clutch system, improving pedal feel and reducing clutch return delay by eliminating the factory delay valve.

Constructed from billet 6061-T6 aluminum with a red-anodized finish, this master cylinder provides both strength and style. The included braided stainless steel line helps resist expansion under high pressure, giving more consistent engagement under aggressive driving conditions.

With its adjustable push rod and clevis, you can fine-tune the clutch engagement point to your preference. The kit is designed for easy installation (plug-and-play with OEM slave) while enhancing responsiveness and control - making it ideal for performance driving or tuned Subaru applications.