DuraGo BR31100 Disc Brake Rotor - Rear

Overview of DuraGo BR31100 Disc Brake Rotor

The DuraGo BR31100 is a solid disc brake rotor designed specifically for Mazda Miata models. Crafted from durable cast iron, this rotor provides reliable braking performance and consistent wear characteristics for everyday driving conditions.

• Material: Full cast iron construction for strength and durability
• Rotor Type: Solid, non-vented design suitable for standard braking systems
• Dimensions: 9.07 inch (230.5 mm) outside diameter and 1.37 inch (34.7 mm) overall height
• Mounting: Features 4 mounting bolt holes with a 3.94 inch (100 mm) bolt circle diameter
• Nominal Thickness: 0.36 inch (9.2 mm) with a discard thickness of 0.31 inch (8 mm)
• Non-directional brake surface for flexible installation
• Conventional rotor type compatible with drum-in-hat setups

Detailed Product Description

The DuraGo BR31100 disc brake rotor is engineered from full cast iron, providing a solid and reliable braking surface for Mazda Miata vehicles. Its solid rotor design, without slots or cross-drilled holes, ensures consistent contact with brake pads and reduces the risk of uneven wear. The rotor measures 230.5 mm in outside diameter and 34.7 mm in overall height, matching OEM specifications for a direct replacement. With a nominal thickness of 9.2 mm and a discard thickness of 8 mm, this rotor maintains safe braking performance throughout its service life. The 4-bolt mounting pattern with a 100 mm bolt circle diameter ensures proper fitment and secure installation. This rotor does not include an ABS tone ring and features a non-directional braking surface, allowing for flexible installation orientation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation or noise
• Addressing rotor thickness below manufacturer specifications to restore braking efficiency
• Resolving uneven brake pad wear due to rotor surface irregularities
• Upgrading to a reliable OEM-equivalent rotor for Mazda Miata brake maintenance
• Eliminating brake judder caused by rotor surface damage or corrosion

Installation Notes and Tips

• Ensure rotor surface is clean and free of oil or debris before installation
• Check mounting bolt holes and hub surface for damage or corrosion
• Torque mounting bolts to manufacturer specifications to avoid rotor warping
• Inspect brake pads for wear and replace if necessary during rotor installation
• Perform a proper bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

DuraGo brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The BR31100 rotor undergoes rigorous quality control to ensure consistent thickness and surface finish. While specific warranty details may vary, DuraGo typically offers limited warranties covering defects in material and workmanship. Always consult product documentation or the supplier for exact warranty terms.