What is the benefit of drilled and slotted brake rotors?

Drilled holes help to vent heat and gases away from the rotor surface, preventing brake fade. The slots help to sweep away brake dust and moisture, ensuring consistent contact between the pad and rotor for improved stopping power.

Does this rotor come with hardware?

This product listing is for the brake rotor only. Installation hardware, such as lug nuts or brake pads, is sold separately and should be checked for compatibility.

How do I know if this is the correct rotor for my vehicle?

This rear left brake rotor is specifically designed to fit the 2011-2017 BMW X3 and the 2015-2018 BMW X4. Always double-check your vehicle's year, make, and model against the fitment information provided.

R1 11-18 BMW X4 Rear Left Drilled & Slotted Black Brake Rotor

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Specifications

Brand: R1 Concepts
Part #: ECB-31152L
UPC: 194873259952

R1 11-18 BMW X4 Rear Left Drilled & Slotted Black Brake Rotor

Name: R1 11-18 BMW X4 Rear Left Drilled & Slotted Black Brake Rotor
Brand: R1 Concepts
Price: 99.79 USD
Availability: InStock

$99.79

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2011-2017 BMW X3. This rear left R1 Concepts brake rotor features drilled and slotted surfaces for improved cooling and stopping power.

Key Features

Fits 2011-2017 BMW X3 and 2015-2018 BMW X4 rear left.
High-carbon iron casting construction helps reduce noise and vibration.
Drilled holes dissipate heat and gases for consistent braking performance.
Slotted design sweeps away dust and moisture for better pad contact.
Black E-coating on non-friction surfaces resists rust and corrosion.
Direct replacement design for straightforward installation.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

BMW X3 2011-2017
BMW X4 2015-2018

Product Details

This rear left brake rotor from R1 Concepts is made from a high-carbon iron casting, which helps to reduce noise and vibration. The rotor is drilled and slotted, a combination that offers a notable improvement over plain rotors, especially when you're braking hard. The drilled holes help dissipate heat and gases, while the slots sweep away dust and moisture, keeping the brake pads in consistent contact with the rotor surface. This means you get more reliable stopping power, whether you're navigating city streets or tackling winding roads.

Designed as a direct replacement for your factory rear left rotor on select BMW X3 and X4 models, this R1 Concepts rotor is built to fit right without modification. The black E-coating applied to the non-friction surfaces helps protect against rust and corrosion, keeping your wheels looking cleaner for longer. If you're looking to restore or improve your braking performance, this rotor is a solid option that balances effectiveness with durability.