Overview
The Baer Brakes 4261647B is a front disc brake kit for 1970 to 1974 Ford and Mercury cars with drum brake spindles, covering the Ford Mustang, Fairlane, Falcon, Maverick and Torino and the Mercury Comet, Cougar, Cyclone and Montego. It replaces the factory drum setup with an 11.29 inch vented, slotted and drilled integral hub rotor clamped by a black S4TL four-piston caliper.
Baer designed the S4 system as a smaller version of its larger brake systems, packaged for 15 inch wheels. Owners converting the front brakes from drums to discs get the caliper, integral hub rotor with bearing races installed, premium bearings packed with Redline synthetic grease, new dust caps, mounting brackets, stainless braided hoses and hardware in one kit. Wheel fit cannot be guaranteed for every wheel style, so check clearance against the S4 template before choosing a wheel.
Baer manufactures the S4 system in Phoenix, Arizona, from US sourced forged or billet aluminum that is CNC machined and then powder coated. The kit is sold as a complete set, which keeps the caliper, rotor, brackets and hoses matched for the front axle.
Key features
- Four-piston S4TL top-loaded caliper in a black powder-coated finish
- One-piece integral hub rotor, slotted, drilled and zinc plated, 11.29 inch outside diameter
- Dual seals for dust, weather and pressure, with a top-load design for quicker pad changes
- Hard anodized aluminum pistons with stainless abutments and noise suppression clips
- CNC machined from US sourced forged or billet aluminum, manufactured in Phoenix, Arizona
- Steel braided hoses with DOT approval
Choosing wheels and tires
A front brake conversion changes the space behind the wheel, so wheel choice deserves attention before the rotor and caliper go on. Check the minimum wheel diameter and the template for the caliper and rotor against the wheel you plan to run. Wheels with a deeper dish or a tighter spoke layout can rub the caliper, so test fit with the wheel mounted and turned to full lock before driving.
Tire size also affects how the brakes feel. A taller tire changes the effective rolling size and can slightly alter speedometer reading and pedal feel, while a wider tire may need more clearance at the caliper. Keep tire changes modest when the front brakes are new.
Inspect the rotor and pads at the first service interval, looking for scoring, uneven wear and blue discoloration. Re-check the wheel bolts after the first few runs, since new hardware can settle.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4261647B |
| UPC | 90127974247 |
| Sold as | Kit |
| Axle | Front |
| Caliper | S4TL, four-piston, fixed, top loaded |
| Caliper color | Black |
| Rotor outside diameter | 11.29 inch |
| Rotor type | 1-piece integral hub, vented |
| Rotor thickness | 0.94 |
| Rotor surface | Slotted, drilled and zinc plated |
| Brake pad FMSI number | 6070012 |
| Template | ST168B |
| Minimum wheel diameter | 15.0 inch |
| Wheel bolt pattern | 5×4.50 (5 lug) |
| Wheel stud size | 1/2-20 x 2.25 inch |
| Hose material | Steel braided, DOT approved |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
It fits the 1970 Ford Fairlane, 1970 Ford Falcon, 1970 to 1974 Ford Maverick, 1970 to 1973 Ford Mustang, 1970 to 1971 Ford Torino, 1971 to 1974 Mercury Comet, 1970 to 1973 Mercury Cougar, 1970 Mercury Cyclone and 1970 to 1971 Mercury Montego, all with factory drum brake spindles.
This kit is for drum-spindle front axles only and does not include the 1974 Ford Mustang or the 1974 Mercury Cougar. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Because the kit is built around drum brake spindles, confirm the vehicle has the factory drum spindle as the fitment notes specify. Use the ST168B template to check the caliper and rotor against the wheel you plan to run. Bed in new pads gently over the first few stops, and test the brakes at low speed in a safe area before normal driving.
What’s included
The kit includes the S4TL four-piston caliper, the one-piece integral hub rotor with bearing races installed, premium bearings packed with Redline synthetic grease, new dust caps, all mounting brackets, stainless braided hoses and hardware.
