Fitment:
✔ 2005-2023 Toyota Tacoma (5 & 6 Lug)
✔ 2005-2015 Toyota X-Runner
Upgrade your vehicle with the Master Cylinder Upgrade Kit, designed specifically for Tacoma & X-Runner owners running a rear disc conversion. This kit provides the proper hydraulic balance needed to match the increased stopping power of rear disc brakes, delivering a firmer pedal feel and more consistent performance under heavy braking.
Proven Quality: Every kit is designed, tested, and backed by years of hands-on performance experience.
Performance You Can Trust: From daily driving to heavy-duty use, our components deliver reliability and confidence.
Support That Cares: We’re a family-owned business dedicated to helping you get the right setup for your vehicle.
Fast Shipping: Most orders ship same or next day, so you can get on the road quicker.
Please Note:
➜ Fits Models with a Rear Disc Conversion Installed.
➜ Tacomas with manual tranmission include a required clutch reservoir.
➜ Ensure your OEM master cylinder matches the one shown in the second picture.
➜ The included poly armor brake lines must be bent to fit your specific application. These lines are flexible and can be bent by hand for a precise fit.
➜ Do not install this kit on a Tacoma/X-Runner without a rear disc brake conversion.
2005-2008 Tacoma Installation Guide
2009-2023 Tacoma Installation Guide
Optimized for Rear Disc Conversions: Ensures proper brake bias and pedal response.
Improved Pedal Feel: Firmer, more responsive braking for added confidence.
Durable Construction: Built with high-quality components for long-lasting reliability.
➜ Warranty
SOS Performance warrants new SOS parts to the original purchaser as follows:
-1-Year-Limited warranty from purchase date (standard).
-2-Year-Limited warranty if installed by a certified ASE technician.
Coverage: Replacement of defective SOS Performance parts due to defect or poor workmanship. Warranty applies only to the original vehicle on which the part was installed.
Exclusions: OEM components are not covered. No coverage for installation errors. -No liability for incidental, consequential, or special damages.
➜ Returns (U.S. Orders)
Unopened items may be returned within 7 days for a full refund (minus shipping charges).
New items may be returned within 15 days with a 20% restocking fee.
Installed or special-order parts cannot be returned.
The customer is responsible for all return and exchange shipping costs.
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Every product we sell is personally tested on our own Tacomas.