Overview
The Baer Brakes 4261640B is a Pro front disc brake kit with a black six-piston caliper, made for 1970–1973 Mercury Cougar and Ford Mustang models and other listed Ford and Mercury cars with factory drum brake spindles. It is a front conversion built around a 13 inch vented rotor.
The rotor is a one-piece integral hub with slotted, drilled and zinc-plated friction surfaces, and the kit takes the common D0731 pad. Baer says its 13 inch Pro is designed for most wheels of 17 inch or larger, so check the minimum wheel diameter of 17.0 inch and the 5×4.50 bolt pattern before you mount it.
Key features
- Black six-piston caliper made in Phoenix, Az
- Caliper body CNC machined from US sourced forged or billet aluminum
- Powder coated caliper finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons designed to minimize uneven pad wear
- Dual seals for dust, weather and pressure, with premium bearings packed in Redline synthetic grease
Pad and rotor wear
The black caliper is a fixed six-piston design, so both pad faces wear against the rotor at the same time. Staggered pistons help even out pressure, but the pads still need regular checks. Look at the friction material on both sides, since a worn inboard pad can go unnoticed when the outboard pad looks fine.
A slotted and drilled rotor sheds gas and water, yet the slots collect dust and pad material over time. Clean the rotor face during pad changes and inspect the edges for lip buildup. Keep the wheel studs and hub clean so the rotor seats true when the wheel is torqued.
- Replace pads in sets across the axle
- Check pad backing plates for rust before reuse
- Lubricate slide pins where the design allows
- Note squeal or grinding as signs of wear
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4261640B |
| UPC | 90127969212 |
| Caliper color | Black |
| Caliper | 6P, six-piston, fixed |
| Caliper pistons | 6 |
| Rotor outside diameter | 13.0 inch |
| Rotor construction | Vented |
| Rotor type | 1-piece integral hub |
| Rotor surface | Slotted, drilled and zinc plated |
| Rotor thickness | 1.1 |
| Brake pad FMSI number | D0731 |
| Hose material | Steel braided |
| Brake hose DOT approved | Yes |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.50 |
| Wheel stud size | 1/2-20 x 2.25 inch |
| Minimum wheel diameter | 17.0 inch |
| Template | Q082H |
| Axle | Front |
| Fitment notes | w/OE drum brake spindles |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
| Sold as | Kit |
Vehicle fitment
Grouped by make, the list covers Ford Falcon, Fairlane and Maverick (1970–1974 where listed), Ford Mustang 1970–1973, Ford Torino 1970–1971, Mercury Cyclone 1970, Mercury Montego 1970–1971, Mercury Comet 1971–1974 and Mercury Cougar 1970–1973, each with drum brake spindles.
Not covered: disc brake spindles, and any year outside the ranges named. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
This system needs the factory drum spindle, so inspect the spindle design before work begins. Baer advises comparing the Q082H template with the wheel you intend to use. Bleed the hydraulic system after the braided hoses are attached.
What’s included
The kit includes the black six-piston caliper, the 13 inch integral hub rotor with bearing races installed, premium bearings, new dust caps, all mounting brackets, stainless braided hoses and hardware.















