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Baer Brakes S4 Brake System Front 70-73 Ford Mustang 70 Fairlane 70 Falcon 70-74 Maverick 70-71 Torino And 70-73 Mercury Cougar 71-74 Comet 70-71 Montego 70 Cyclone W/OE Drum Brake Spindle Monster Green 11.29 Inch – 4261647MG

Baer Brakes

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  • Baer Brakes S4 front disc brake system, part number 4261647MG, Monster Green 4-piston S4TL caliper
  • Fits 1970 to 1974 Ford and Mercury vehicles with OE drum brake spindles
  • 11.29 inch vented, slotted, drilled rotor with 1-piece integral hub
  • Kit includes brackets, braided hoses, bearings and hardware
  • Minimum wheel diameter: 15.0 inch

Description

Overview

The Baer Brakes 4261647MG is a complete S4 front disc brake system in Monster Green for 1970 to 1974 Ford and Mercury cars that came with drum brakes at the front. The kit pairs a 4-piston S4TL caliper with an 11.29 inch vented rotor and is made to fit OE drum brake spindles.

Baer builds the 11 inch SS4 on the same design approach as its larger systems, packaged for 15 inch wheels. It fits the Ford Mustang, Fairlane, Falcon, Maverick and Torino and the Mercury Comet, Cougar, Cyclone and Montego, with years covered in the fitment section below. The caliper is manufactured in Phoenix, AZ.

Key features

  • Fixed 4-piston S4TL caliper with a top-load design for quick, simple pad changes
  • Hard anodized aluminum pistons, stainless steel abutments and noise suppression clips
  • Dual seals that guard against dust, weather and pressure
  • Powder coated Monster Green caliper, CNC machined from US-sourced forged or billet aluminum
  • Slotted, drilled and zinc-plated 1-piece integral hub rotor
  • Bearing races pre-installed, premium bearings packed with Redline synthetic grease, new dust caps
  • Mounting brackets, braided hoses and hardware included

Before you buy

Converting front drum brakes to discs changes how the whole braking system works, so look at the parts around the front axle before installing. Disc calipers need more clamping force than drum shoes, so the master cylinder, brake lines and any proportioning or pressure-control valve may need review. A new front caliper cannot make up for worn parts elsewhere, so inspect the full hydraulic system first.

Wheel choice matters as much as the brake parts. Clearance depends on offset, spoke design and backspacing as well as diameter, so test-fit wheels before committing to a set. Tire width and sidewall height also affect how close the tire comes to the caliper at full steering lock.

  • Master cylinder and brake lines in sound condition
  • Proportioning or pressure-control valve function
  • Brake fluid fresh and free of moisture
  • Steering and suspension joints without play
  • Wheel offset and spoke clearance over the caliper

Specifications

Brand Baer Brakes
Part number 4261647MG
UPC 90127974292
Caliper S4TL, 4-piston, fixed
Caliper color Monster Green
Rotor outside diameter 11.29 inch
Rotor construction Vented, 1-piece integral hub
Rotor thickness 0.94
Rotor surface Slotted, drilled and zinc plated
Lug count 5 lug
Wheel bolt pattern 5×4.50
Wheel stud size 1/2-20 x 2.25 inch
Minimum wheel diameter 15.0 inch
Hose type Braided, DOT approved
Disc brake pad FMSI number 6070012
Template ST168B
Axle Front
Grade Performance
Sold as Kit
Country of origin USA

Vehicle fitment

It fits these vehicles with OE drum brake spindles: 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.

Models and years outside that list, such as 1974 Mustangs or Torinos from 1972 on, are not covered. Confirm your vehicle’s year, model and trim before ordering.

Installation notes

Confirm your car has the OE drum brake spindles this kit is written for, since the fitment is stated only with them. Baer advises using its ST168B template to check clearance against the wheel you plan to run, because wheel styles vary widely. Brake work should go to a qualified technician.

What’s included

The kit contains the S4TL caliper, the 11.29 inch 1-piece integral hub rotor with bearing races and premium bearings, mounting brackets, braided brake hoses, new dust caps and installation hardware.

Not included: wheels, which must clear the 15.0 inch minimum wheel diameter and the caliper, verified with the template.

Specification

Shipping weight 67 lbs
Package dimensions 16.25 × 15.5 × 15.5 in
brands

Sold as

Kit

Wheel bolt pattern (in)

5×4.50

Lug nuts

5 Lug

Rotor type

1-Piece Integral Hub

Country of origin

USA

Fitment

VehicleYearsTrims
Ford Fairlane1970All
Ford Falcon1970All
Ford Maverick1970–1974All
Ford Mustang1970–1973All
Ford Torino1970–1971All
Mercury Comet1971–1974All
Mercury Cougar1970–1973All
Mercury Cyclone1970All
Mercury Montego1970–1971All

Use “Select your vehicle” at the top of the page to check this part against your vehicle.

Questions & Answers

Will the 4261647MG fit a 1970 Ford Mustang with drum brakes?

Yes, the fitment covers 1970 to 1973 Ford Mustang models with OE drum brake spindles, along with the other Ford and Mercury vehicles in the list. Confirm your vehicle's year, model and trim before ordering.

What comes in the Monster Green kit?

The kit includes the S4TL caliper, an 11.29 inch 1-piece integral hub rotor, mounting brackets, braided hoses and hardware. Rotors come with bearing races installed and premium bearings packed with Redline synthetic grease, plus new dust caps.

Does this system work with 15-inch wheels?

The minimum wheel diameter is 15.0 inch. Because wheel styles vary widely, check clearance with the ST168B template against the specific wheel you intend to use before ordering.

Do I need to change other brake parts when converting to disc?

Often, yes. Converting front drums to discs commonly involves checking the master cylinder, brake lines and any proportioning valve, since disc calipers need more clamping force than the old drum setup. Inspect the whole hydraulic system before installation and replace worn parts as needed.

How can I tell if a caliper is sticking?

Signs include a pull to one side under braking, a hot wheel after a drive, and pads that wear unevenly on one side. A sticking caliper may need its pins cleaned, its boots replaced or the piston freed up. Have a qualified technician inspect it if the symptoms continue.

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