Detroit-Built. Fleet-Proven. Engineered to Stop.
North America's specialist in remanufactured disc brake calipers, copper-free disc pads, and precision brake tools for transit and heavy-duty commercial fleets.
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APTA International Bus Roadeo 2026
Air Brake System Competition
Salt Lake City, UT · May 15–19, 2026 · Presented by Fraser Gauge
Quality Assurance
Our Quality Assurance Team…
performing the little things, that make a HUGE difference!
Every remanufactured caliper goes through our rigorous 6-step QA process before it leaves our Detroit facility.
- 1Complete disassembly & parts inspection
- 2Ultrasonic cleaning & bore measurement
- 3Replacement of all seals, boots & hardware
- 4Piston fit & torque verification
- 5Pressure & leak-down testing
- 6Final inspection & OEM-spec certification
Find by Part Number
Enter OEM, competitor, or Fraser part numbers — one per line or comma-separated. We'll match them to our catalog instantly.
Our Brands
Two Brands. One Mission.
Fifty-five years of Detroit engineering — delivering precision brake components and copper-free disc pads to commercial fleets across North America.
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Est. 1970 · Detroit
Remanufactured Disc Brake Calipers
Every caliper fully disassembled, cleaned, rebuilt with OE-quality components, and pressure-tested to 150 PSI before it ships. Not a rebuild — a remanufacture. Backed by a 1-year unlimited-miles warranty.
- Meritor EX225 · Bendix ADB22X · WABCO PAN 22 · Knorr SN7
- 150 PSI pneumatic pressure test on every unit
- 1-year unlimited-miles warranty — no exceptions
In Stock · Ships DetroitCopper-Free Disc Brake Pads
Formulated exclusively for heavy-duty transit and commercial vehicles. Zero copper. FMVSS 121 compliant. Meets the Better Brake Law in every state. Proven in real-world fleet operations from MTA Baltimore to transit agencies nationwide.
- PR1311CF23 & PR1203CF23 — in-stock, ships from Detroit
- 0 ppm copper — Better Brake Law compliant in all 50 states
- FMVSS 121 certified · Request fleet quote
What Fleet Operators Say
When a bus doesn't stop, there's no margin for error. Here's why fleet maintenance teams across North America trust Fraser Gauge.
"We run a 400-bus fleet on EX225 calipers. Fraser Gauge's reman units meet every OEM spec, the core exchange is seamless, and we've never had a warranty issue. They're the only caliper supplier we trust."
Fleet Maintenance Manager
Transit Authority — Northeast U.S. (name withheld by request)
"The part number lookup and Ask Dave cut our diagnostic time in half. Our techs enter the symptom and get a step-by-step procedure with the exact Fraser part number. It's like having a brake engineer on call 24/7."
Parts Manager
Bus Rapid Transit Operator — Midwest (name withheld by request)
"Switched to ProRev Disc Pads - Copper Free two years ago. Better Brake Law compliance was the trigger, but the performance kept us. Consistent fade resistance, longer service intervals, and no copper contamination in our wash bay. Straightforward decision."
Chief Maintenance Officer
Coach & Transit Division — Southeast U.S. (name withheld by request)
Customer names and organizations withheld at their request. Contact us to speak with a reference customer.
The Fraser Gauge Difference
Generalist suppliers sell brake parts. We engineer stopping power — with the precision, accountability, and Detroit craftsmanship that 50 years of specialization produces.
50+ Years of Specialization
Founded in Detroit in 1970. Every product, every process, every part number built around one application: commercial vehicle brakes.
Factory-Level Testing
Every remanufactured caliper undergoes pressure testing, wear sensor validation, and dimensional inspection before it ships. No exceptions.
Ask Dave
Our 24/7 AI Expert knows every caliper, every torque spec, and every failure mode — and recommends the exact Fraser part to fix it.
Copper-Free Compliance
ProRev Disc Pads - Copper Free meet the Better Brake Law in every state — engineered for commercial vehicles, not adapted from passenger car formulas.
50+
Years Specializing in Commercial Disc Brakes
150 PSI
Pneumatic Pressure Test on Every Caliper
1-Year
Unlimited Miles Warranty — No Exceptions
0 ppm
Copper in ProRev Disc Pads — Better Brake Law Compliant
Why Your Transit Fleet's Calipers Are Failing Prematurely — And How to Stop It
Guide pin seizure is the root cause of 90% of premature caliper failures. Here's the six-step diagnostic checklist that prevents it.
8 min read
The True Cost of Deferred Brake Maintenance on Commercial Fleets
A $180 rotor replacement deferred 15,000 miles becomes a $1,800 repair event. The arithmetic of deferral is always worse than it looks.
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Your Fleet Deserves a Brake Specialist
Request pricing on remanufactured calipers, start a core exchange, or talk to our technical team. Fraser Gauge has been the answer for 50 years.