Overview
The Baer Brakes SS4 Plus front brake kit, part number 4261379MG, is an 11-inch front disc brake system in Monster Green for 1970 to 1974 Ford and Mercury cars that came with drum brakes up front. A four-piston S4 caliper clamps a two-piece slotted, drilled and zinc-plated rotor, and the assembly is designed to mount on original drum brake spindles.
Baer built the SS4 Plus as a smaller version of its larger systems, sized for 15-inch wheels and up. Billet aluminum hubs come assembled with bearings, and the rotors are pre-assembled with stainless hardware. Baer makes the kit in Phoenix, Arizona.
Key features
- Four-piston S4 fixed caliper with a Monster Green powder-coated finish
- Vented two-piece rotors, 11.0 inches across, slotted, drilled and zinc plated
- Hard anodized aluminum pistons with stainless steel abutments and noise clips
- Dual seals guarding against dust, weather and pressure
- Billet aluminum hubs with premium bearings packed with Redline synthetic grease
- CNC machined from US-sourced forged or billet aluminum
Before you convert
Swapping drum brakes for discs changes how the whole front end works. The rotor and caliper take over stopping duty at the front, while the rear drums and the master cylinder keep their original roles, so the balance of the system is worth considering before a new setup goes on the road. Many owners also notice a different pedal feel after a conversion, because pad contact on a rotor differs from a drum shoe pressing outward.
Wheel choice matters as much as the caliper. Check that the wheel clears the caliper and rotor with the tire mounted, and that the wheel offset places the tire where the suspension expects it. Wheel bearings, ball joints and tie rod ends are commonly inspected at the same time, because the front end is already apart during the swap.
- Check the master cylinder capacity for the added fluid volume
- Inspect brake lines and fittings before installation
- Replace worn wheel bearings while the hub is off
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4261379MG |
| UPC | 90127904015 |
| Kit type | Complete kit |
| Axle position | Front |
| Caliper | S4, four-piston, fixed |
| Caliper color | Monster Green |
| Rotor outside diameter | 11.0 inch |
| Rotor construction | Vented, two-piece |
| Rotor thickness | 1.02 inch |
| Rotor surface | Slotted, drilled and zinc plated |
| Minimum wheel diameter | 15.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.50 |
| Wheel stud size | 1/2-20 x 2.25 inch |
| Brake pad type | DR1 or HB100 (FMSI DR1) |
| Hose material | Steel braided |
| Brake hose DOT approved | Yes |
| Template | S162A |
| Grade type | Performance |
| Fitment notes | With OE drum brake spindles |
| Country of origin | USA |
Vehicle fitment
The kit fits the following vehicles, each with original drum brake spindles:
- 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
- 1970–1971 Mercury Montego
Not covered: the 1972–1974 Ford Torino, the 1972 and later Mercury Montego, and Mustang or Maverick models from 1975 on. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Because the kit is written for original drum brake spindles, confirm your car still has them before fitting. Baer recommends comparing the S162A template against the wheel you plan to run, since the company cannot guarantee fit with every wheel style; the wheel should measure at least 15.0 inches in diameter. Because brakes are safety equipment, a shop experienced with disc systems should bleed the lines and bed the pads.
What’s included
All mounting brackets, stainless braided hoses and hardware. Billet aluminum hubs with premium bearings and billet dust caps. Two-piece 11-inch rotors pre-assembled with NAS high-grade stainless hardware. Four-piston S4 caliper assembly.
Not included: Wheels.
