SKU: MC15020-BK
Clutch Masters 2015+ Subaru WRX/STi .75in Bore Master Cylinder Upgrade Kit - Black
Upgrade your clutch hydraulics with the Clutch Masters MC15020-BK master cylinder kit, designed specifically for 2015-2022 Subaru WRX 2.0T 6-Speed and WRX STI 2.5T 6-Speed models. This billet aluminum unit delivers crisper pedal feel and removes the factory clutch delay valve for immediate engagement and quicker shifts during aggressive driving. Complete plug-and-play installation ensures reliable performance with OEM slave cylinders.
Key Features
- Billet 6061 Aluminum Master Cylinder (.700" Bore): Provides precise hydraulic control and lightweight durability for consistent clutch operation under high stress.
- Eliminates Clutch Delay Valve: Allows instant fluid return for faster 1-2 shifts without lag, enabling rapid gear changes and full power application.
- Adjustable Pushrod and Clevis: Customizes engagement point and pedal travel to match your setup and prevent diaphragm overthrow.
- Complete Plug-and-Play Kit: Includes -3AN stainless line, banjo fittings, barb fitting, reservoir hose, adapter, and jam nut tool for direct bolt-on fit.
- Black Anodized Finish: Corrosion-resistant coating enhances style and longevity in demanding track or street conditions.
Product Notes
- On 2015+ WRX/STI, kit includes rubber hose to connect shared factory reservoir to master cylinder.
- Verify clutch throw after install. adjust housing, pushrod, or add pedal stop to avoid overthrowing diaphragm.
- Fully compatible with OEM slave cylinders. no additional modifications required.
Installation Notes
- Professional installation recommended.
- Adjust master cylinder position relative to firewall and pedal for proper throw. use included jam nut tool.
- Works directly with OEM slave. bleed hydraulic system thoroughly post-install.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2022 | Subaru | WRX | 2.0T 6-Speed |
| 2015-2022 | Subaru | WRX STI | 2.5T 6-Speed |
Why Choose Clutch Masters?
- Engineered for motorsport demands with proven clutch systems in Subaru applications.
- Machined from high-grade billet aluminum for exact OEM replacement and enhanced flow.
- Directly addresses common hydraulic issues for reliable power transfer in high-horsepower builds.
Frequently Asked Questions
-
Q: Will this kit fit my 2015-2022 Subaru WRX or STI with stock clutch slave?
A: Yes, fully compatible with OEM slave cylinders on 2015-2022 WRX 2.0T 6-Speed and STI 2.5T 6-Speed. includes all fittings for seamless integration. -
Q: What material and bore size does the master cylinder use?
A: Constructed from 6061 billet aluminum with .700" bore for optimized pressure and crisp response over factory unit. -
Q: Do I need special tools or adjustments for installation?
A: Kit includes jam nut tool. highly adjustable design requires checking pedal throw to dial in engagement and avoid overtravel.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed, 11 x 7 x 5 inches
- Weight: 2.65 lbs
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