Bosch 53011530 Disc Brake Rotor - Rear

Bosch QuietCast Rear Brake Rotor for MX-5 Miata

The Bosch QuietCast Disc Brake Rotor, part number 53011530, is a rear replacement rotor built for the Mazda MX-5 Miata and Fiat 124 Spider. It uses an iron alloy construction with a smooth brake surface and Geomet disc finish to support consistent braking performance and corrosion resistance.

For drivers searching for a rear brake rotor for 2016-2025 Mazda MX-5 Miata or 2017-2020 Fiat 124 Spider, this Bosch QuietCast rotor is a direct-fit option with the correct 4-bolt pattern and 55 mm center bore. The 53011530 rotor is also a solid, conventional rotor without a hub assembly.

Key Features

• Bosch QuietCast Disc Brake Rotor, part number 53011530
• Rear disc brake rotor for Mazda MX-5 Miata and Fiat 124 Spider applications
• Iron alloy construction with a smooth brake surface
• Geomet disc finish and coated hat finish for rust resistance
• Directional brake surface design
• Solid, conventional rotor without hub assembly
• 4 mounting bolt holes with a 100 mm bolt circle diameter
• 55 mm center bore diameter and 280 mm outside diameter

Product Details

Bosch QuietCast brake rotors are built for drivers who want a precise OE-style replacement with attention to surface finish and corrosion protection. This rotor uses a smooth braking surface, Geomet coating on the disc, and a coated hat finish to help maintain appearance and resist rust in everyday driving conditions. The 53011530 rotor measures 280 mm in outside diameter and 9.5 mm nominal thickness, with a 35.7 mm overall height.

This part cross-references 68313167AA and N25126251 for the same application. It is a strong fitment match for rear brake service on the Mazda MX-5 Miata and Fiat 124 Spider, especially when replacing a worn, scored, or rusted rotor.

Common Brake Issues This Rotor Can Address

• Brake pulsation caused by rotor wear or thickness variation
• Visible scoring, grooves, or uneven rotor surface wear
• Rust buildup on the braking surface or hat area
• Reduced braking consistency from an out-of-spec rear rotor
• Noisy braking related to rotor surface condition

Installation Notes

• Fits 2016-2025 Mazda MX-5 Miata, rear
• Fits 2017-2020 Fiat 124 Spider, rear
• Verify rotor thickness, center bore, and bolt pattern before installation
• Inspect pads, caliper hardware, and hub condition during brake service
• Clean the rotor and hub mating surfaces before mounting
• Follow the vehicle manufacturer’s brake service procedure and torque specifications

Quality Assurance

Bosch QuietCast rotors are engineered with corrosion-resistant finishes and OE-style dimensions for accurate replacement fitment. Part number 53011530 is built to match the listed rear applications for the Mazda MX-5 Miata and Fiat 124 Spider.