Overview
The Baer Brakes S4 front brake system kit, part number 4261379CY, is a front disc brake upgrade for 1970 to 1974 Ford and Mercury vehicles that originally used drum brake spindles. It pairs a 4-piston S4 caliper with an 11 inch two-piece slotted, drilled, zinc plated rotor, sized for 15 inch wheels.
The kit fits the Ford Mustang, Torino, Maverick, Fairlane, Falcon, Comet, Cougar, Cyclone and Montego in the years shown below. Billet aluminum hubs come assembled with premium bearings, and the rotors arrive pre-assembled with stainless hardware.
Key features
- 2-piece, 4-piston S4 caliper, manufactured in Phoenix, Az
- CNC machined from US sourced forged or billet aluminum
- Powder coated Comp Yellow caliper finish
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- 2-piece slotted, drilled, zinc plated rotor with NAS high grade stainless hardware
- Billet dust caps and Redline synthetic grease in the bearings
Front wheel and hub setup
The wheel is the part of a disc conversion that most often causes trouble. Clearance between the wheel barrel and the caliper, the wheel offset and the tire width all affect whether the wheel seats properly. Test fit with the tire mounted before the car is lowered, and turn the wheel by hand to check for rubbing.
Hubs and bearings deserve attention too. Billet hubs with bearings need only periodic checks, but any play or roughness should be fixed before driving. Note the lug nut torque after installation and check it again after the first short drive, once the new hardware has settled.
- Test fit the wheel with the tire mounted
- Check for rubbing against the caliper at full steering lock
- Recheck lug nuts after the first drive
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4261379CY |
| UPC | 90127903858 |
| Sold as | Kit |
| Axle | Front |
| Caliper | S4, 4-piston, fixed |
| Caliper color | Comp Yellow |
| Brake pad type | DR1 or HB100 (FMSI DR1) |
| Rotor outside diameter | 11.0 inch |
| Rotor type | 2-piece, vented |
| Rotor thickness | 1.02 |
| Rotor surface | Slotted, drilled and zinc plated |
| Min 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 |
| Template | S162A |
| Country of origin | USA |
Vehicle fitment
Fitment covers the 1970 Ford Fairlane, 1970 Ford Falcon, 1970-1974 Ford Maverick, 1970-1973 Ford Mustang, 1970-1971 Ford Torino, 1971-1974 Mercury Comet, 1970-1973 Mercury Cougar, 1970 Mercury Cyclone and 1970-1971 Mercury Montego. The kit is written for vehicles with OE drum brake spindles.
Model years outside these listed ranges, such as a 1974 Ford Mustang, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The mounting brackets and stainless braided hoses are included with the kit. Because fit depends on the wheel, compare the S162A template with your wheel before mounting. Brake work should be done by a qualified mechanic, and the pads should be bedded in before hard use.
What’s included
The kit includes billet aluminum hubs with premium bearings packed with Redline synthetic grease and billet dust caps, rotors pre-assembled with NAS high grade stainless hardware, all mounting brackets, and stainless braided hoses with hardware.
Not included: Wheels.
