The Authority in Commercial Brake & Clutch Systems
As the operating hub for Automotive Brake & Clutch and Bexar Pro Components, we supply exact-fit master cylinders, heavy-duty clutch kits, and Hydro-Max parts to transit fleets and independent shops across North America, while running a premier medium-to-heavy-duty service bay in Kirby.
Verified Hardware Shipped Nationwide
We balance our inventory to support both heavy equipment fleets and automotive applications. Whether you need a Hydro-Max long pedal rod for a medium-duty truck or a precise 1-1/4-inch bore size master cylinder, we extract the specs so you don’t have to guess.
Critical: Verify Specifications
Always verify your casting numbers, inverted flare (INV) outlet sizes, and exact bore diameters before purchasing. Do not rely on Year/Make/Model alone for commercial applications. Use the search below to look up your verified casting number.
Find Your Part by Vehicle or Casting Number
Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes since 1985, component failure is rarely just a “bad part.” We see it daily in our Kirby bays.
Whether you are replacing a hydraulic master cylinder or servicing a commercial drivetrain, pushrod alignment and precise pedal rod adjustments are critical. Improper alignment will bind the internal cups, causing premature pressure failure. We provide full installation schematics for master cylinders (excluding slave cylinders) to ensure your fleet stays on the road.
Certified Floor Capabilities
- Official Texas DPS Certified Vehicle Inspector
- Medium-Duty & Class 5-8 Commercial Fleet Ops
- Bexar Pro Component Distribution Hub
- Walk-in Counter Service @ 5241 Old Seguin Rd
San Antonio & Kirby Repair Facility
Need in-bay mechanical work or an official Texas DPS State Inspection? Lock down your dedicated technician bay space below. Commercial fleet accounts bypass upfront payment entirely.
Frequently Asked Questions
Can I order brake or clutch parts without calling?
Yes. You get 10% off when you skip the phone line and order directly through our website. Use code AUTOMOTIVE10 at checkout. All our listings feature verified casting numbers and exact bore sizes to ensure perfect fitment.
Are you an official Texas DOT/DPS inspection station?
Yes, our physical shop in Kirby, TX is a certified Texas DPS vehicle inspection station. We perform official DOT compliance inspections on-site for both commercial and commuter vehicles.
Do you set up commercial fleet net billing accounts?
Yes. We offer Net-30 billing for approved commercial fleet and transit accounts, allowing vehicles to be serviced and Bexar Pro parts to be shipped without upfront credit card holds.

