Automotive Brake & Clutch: San Antonio’s Technical Specialists Since 1985
Automotive Brake & Clutch: San Antonio’s Technical Specialists Since 1985
Automotive Brake & Clutch (ABC Dynamics) is a locally owned institution with a 40-year legacy of technical excellence. Operating from our strategic facility in Kirby, Texas, we bridge the gap between high-precision machine shop roots and modern heavy-duty commercial fleet repair. We are San Antonio’s trusted authority for diesel diagnostics, clutch rebuilding, and Federal FMCSA compliance.
🛑 Expert Shop Note & Legacy Advisory
Drawing from our shop experience specializing in heavy-duty brakes since 1985, structural reliability hinges on strict component alignment. Whether troubleshooting a dropping pedal zone or a hard clutch engagement, uncertified general mechanics routinely fail to verify critical pushrod alignment settings or confirm matching parameters—such as a true 1-inch bore size cylinder setup. Our Texas DPS Certified Inspectors deploy platform-specific software diagnostics across all commercial chassis boneyards to isolate faults accurately before any parts are unbolted.
The Duffek Legacy: 40 Years of Specialization
Founded in 1985 as Industrial Brake & Clutch by Johnny Duffek, Jr. and Johnny Schultz, we began as a specialized machine shop relining brake shoes and rebuilding heavy clutches for the regional San Antonio fleet transit sectors.
Today, Scott Duffek leads the company with over 30 years of hands-on expertise. Under his leadership, we have evolved into a premier NAPA Truck Service Center, combining our deep mechanical heritage with state-of-the-art Cummins Insite, Allison Doc, and J-Pro diagnostics.
Verified Authority & Credentials
- ✅ Official Texas DOT Inspection Station
- ✅ NAPA Truck Service Center (National Warranty Support)
- ✅ ASE Master Certified Technicians
- ✅ EPA Section 608/609 Certified (Climate Control Engineering)
- ✅ CARFAX® Verified Service History Shop
- ✅ Bexar County Commercial Inspection Facility
A Dual-Focus Mission: San Antonio Service & National Parts Supply
1. Heavy-Duty Fleet Service
Specialized diesel engine repair, air brake overhauls (S-cam/ABS), and Federal FMCSA inspections designed to maximize uptime for Texas commercial fleets.
2. Specialized Drivetrain Hydraulics
The region’s top destination for Hydromax boosters, 1-inch bore master cylinders, and heavy truck clutch replacement featuring complete flywheel replacement.
3. National E-Commerce Supply
Supporting automotive truck operators and fleet logistics business sectors across the U.S. and globally with hard-to-find components and Bexar Pro Components distribution support.
Trusted by local fleets. Respected by national builders. Shipped internationally.
