Clutch Masters MC15738-BK Master Cylinder for 2013-25 BRZ/FR-S/86 .70in Bore

Vehicle Fitment

• 2013-2016 Scion FR-S (ZN6, 2.0L H4 FA20, RWD, 6-Speed Manual)
• 2013-2021 Toyota GT86 (ZN6, 2.0L H4 FA20, RWD, 6-Speed Manual)
• 2017-2020 Toyota 86 (ZN6, 2.0L H4 FA20, RWD, 6-Speed Manual)
• 2022-2026 Toyota GR86 (ZN8, 2.4L H4 FA24, RWD, 6-Speed Manual)
• 2013-2021 Subaru BRZ (ZC6, 2.0L H4 FA20, RWD, 6-Speed Manual)
• 2022-2026 Subaru BRZ (ZD8, 2.4L H4 FA24, RWD, 6-Speed Manual)

Fitment Notes

• Fits manual transmission models only.
• Complete plug-and-play replacement master cylinder assembly.
• Compatible with OEM slave cylinder.
• Eliminates the factory clutch delay valve for quicker clutch engagement.
• Black anodized billet aluminum finish.

Features

• CNC-machined billet aluminum clutch master cylinder.
• Black anodized finish for corrosion resistance.
• 0.70-inch bore improves clutch pedal feel and hydraulic response.
• Removes the restrictive factory clutch delay valve.
• Provides quicker and more consistent clutch engagement.
• Fully adjustable pushrod and firewall mounting position.
• Direct bolt-in installation with no permanent modifications.
• Works with the factory slave cylinder.
• Ideal for street, autocross, track, and high-performance clutch systems.

Specifications

• Part Number: MC15738-BK
• Product Type: Clutch Master Cylinder Upgrade Kit
• Material: CNC Billet Aluminum
• Finish: Black Anodized
• Bore Size: 0.70 in.
• Transmission: 6-Speed Manual
• Drivetrain: RWD
• OEM Slave Cylinder Compatible: Yes
• Position: Clutch Hydraulic Master Cylinder

Included Components

• 1x Billet Aluminum Clutch Master Cylinder
• 1x Adjustable Pushrod and Clevis Assembly
• 1x Reservoir and Hydraulic Fittings
• 1x Mounting Hardware Kit
• 1x Jam Nut Tool
• 1x Installation Instructions

Product Description

The Clutch Masters MC15738-BK Clutch Master Cylinder Upgrade Kit is designed to improve clutch pedal feel and hydraulic performance for Scion FR-S, Toyota 86/GR86, and Subaru BRZ manual transmission models. Precision-machined from billet aluminum with a durable black anodized finish, it replaces the aging factory master cylinder with a stronger, more responsive assembly built for spirited street driving and motorsports.

Its larger 0.70-inch bore and elimination of the factory clutch delay valve provide faster clutch engagement, improved shift consistency, and a more direct pedal feel. The adjustable pushrod allows proper pedal geometry and clutch travel adjustment, while the complete plug-and-play design retains compatibility with the factory slave cylinder for straightforward installation.