BMW F70 F74 X1 U11 M Sport Rear Brake Disc Left Right N/O/S 6891087

BMW F70 F74 X1 U11 M Sport Rear Brake Disc Left Right is an original BMW braking system component, designed for installation on the rear axle on either the left or right side. This used part from the Brake discs category allows you to maintain factory braking performance while optimizing service costs.

Specifications and technical data

• SKU: 6891087-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6891087
• Substitutable numbers: 6891087, 34206891087
• Location on the vehicle: Rear, Right, Left
• Part type: Brake Disc Rotor
• Category: Brake Disc Rotors

Purpose and compatibility with BMW X1 U11 M Sport

The presented rear brake disc has been designed for BMW F70/F74 and X1 U11 models in the M Sport version, where precise fitment to the factory braking system is crucial. The design intended for installation on the rear axle on the left or right side ensures consistency with the stock suspension geometry and calipers, which translates into stable, predictable braking. By using an original component, compatibility with vehicle safety systems, such as ABS or traction control, is maintained, as these require properly selected friction elements and the correct operating characteristics of the disc.

Technical and functional characteristics

The rear brake disc in this model has been developed to work with factory BMW brake pads, allowing for even wear and a stable friction coefficient across a wide temperature range. The design intended for rear axle operation ensures:

• adequate working surface for brake calipers,
• proper heat dissipation during intensive braking,
• maintenance of axial alignment and rotational stability at high speeds. Selecting the correct disc for a specific body version and braking system has a direct impact on braking efficiency, even distribution of braking forces between axles, and driving comfort (reduction of vibrations and noise).

Benefits of using an original BMW disc

Using an original BMW M Sport rear brake disc allows you to maintain the consistency of the entire braking system according to the manufacturer's specifications. Key advantages include:

• factory fitment to the hub, calipers, and brake hardware,
• maintenance of the braking characteristics intended by the manufacturer,
• compatibility with driving safety assistance systems,
• possibility of replacing a single element without interfering with other axle components. A used brake disc is a solution that allows you to reduce service costs while maintaining the original specification and solid build quality characteristic of the BMW brand.

Professional selection and safety of use

To ensure the proper operation of the braking system, the rear disc should always be selected based on vehicle data and part numbers assigned to a specific configuration. It is worth paying attention to compatibility with the body version, type of braking system, and placement on the vehicle (rear, left/right side). During installation, it is recommended to:

• replace discs in pairs on one axle,
• check the condition of the brake pads and replace them if necessary,
• inspect hubs, bearings, and mounting elements. If you want to learn more about the safe selection of used braking system components, check out our guide Second-hand braking system: how to safely choose discs, calipers, and ABS?, where you will find a practical checklist useful during purchase. If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as additional discs, compatible pads, or related mounting hardware, check out the available parts in the BMW Brake discs category.