DuraGo BR54122 Disc Brake Rotor - Rear

Overview of DuraGo BR54122 Disc Brake Rotor

The DuraGo BR54122 is a solid disc brake rotor designed for reliable braking performance on select Ford, Mazda, and Mercury vehicles. Engineered with cast iron construction, this rotor is compatible with models such as the Ford Escape, Mazda Mariner, and Mercury Tribute.

• Material: Durable cast iron for consistent heat dissipation
• Rotor Type: Solid, drum-in-hat design
• Outside Diameter: 11.88 inches (301.8 mm)
• Nominal Thickness: 0.47 inches (12 mm)
• Mounting Bolt Holes: 5 holes with 4.5 inch (114.3 mm) bolt circle diameter
• Center Hole Diameter: 2.83 inches (72 mm)
• Non-directional brake surface for versatile installation
• No ABS tone ring included
• No rust resistant coating applied

Detailed Product Description

The DuraGo BR54122 disc brake rotor features a full cast iron construction that provides durability and effective heat management during braking. Its solid, drum-in-hat design integrates the rotor and drum components, making it suitable for vehicles equipped with rear drum brakes and front disc brakes. The rotor measures 11.88 inches in outside diameter and has a nominal thickness of 0.47 inches, with a discard thickness of 0.43 inches, ensuring it meets OEM specifications for safe replacement.

This rotor is designed with five mounting bolt holes arranged on a 4.5-inch bolt circle diameter, compatible with the rear brake assemblies of Ford Escape, Mazda Mariner, and Mercury Tribute models. The non-directional brake surface allows for flexible installation without concern for rotor orientation. Note that this rotor does not include an ABS tone ring and does not have a rust resistant coating, so proper maintenance is recommended to prevent corrosion over time.

Common Applications and Issues Addressed

• Replacement for worn or warped rear disc brake rotors on Ford Escape, Mazda Mariner, and Mercury Tribute
• Resolves brake pulsation caused by uneven rotor surfaces
• Addresses reduced braking efficiency due to rotor thickness below discard limits
• Eliminates noise and vibration from damaged or scored rotors
• Restores proper brake drum function with integrated drum-in-hat design

Installation Notes and Tips

• Verify rotor thickness before installation; discard thickness is 0.43 inches
• Ensure mounting bolt holes align with vehicle specifications (5 holes, 4.5 inch bolt circle)
• Clean rotor surface and hub mounting area to prevent uneven wear
• Check brake pads for wear and replace if necessary during rotor installation
• Torque mounting bolts to manufacturer specifications to avoid rotor warping

Quality Assurance and Warranty

DuraGo manufactures the BR54122 rotor to meet or exceed OEM standards for fit, form, and function. The cast iron construction ensures consistent braking performance under normal operating conditions. While this rotor does not include a rust resistant coating, proper care and maintenance can extend its service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.