What is the benefit of the 2-piece rotor design with an aluminum hat?

The 2-piece design allows for better thermal expansion of the cast iron rotor ring. The T6061-T6 aluminum hat reduces unsprung weight and helps draw heat away from the hub, improving overall brake performance and longevity.

What does the 'XD' designation mean for this rotor?

The XD series features a non-directional cross-drilled and dimpled pattern. This design provides enhanced structural support for the rotor and offers improved cooling benefits compared to standard finishes, along with a sporty aesthetic.

Can I replace just the rotor ring or the hat later on?

Yes, DBA offers replacement hats and rotor rings separately for their 5000 Series. This means you can often reuse your existing DBA 5000 Series hats and just replace the rotor rings when they wear out.

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Specifications

Brand: DBA
Part #: DBA53050BLKXD-10
UPC: 9316391427717

DBA 18-21 Subaru WRX STI Front 5000 Series 2-Piece Drilled Rotor w/Black Hat

Name: DBA 18-21 Subaru WRX STI Front 5000 Series 2-Piece Drilled Rotor w/Black Hat
Brand: DBA
SKU: dba-dba-18-21-subaru-wrx-sti-front-5000-series-2-piece-drilled-rotor-w-black-hat-t14-719620
Price: 850.25 USD
Availability: BackOrder

$850.25

On Backorder

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

Fits 2018-2021 Subaru WRX. DBA 5000 Series 2-piece front brake rotor with black hat, designed for improved heat management and reduced unsprung weight.

Key Features

Fits 2018 and 2021 Subaru WRX.
This is a 2-piece direct replacement brake rotor assembly for the front axle.
Features a T6061-T6 aerospace-grade aluminum hat for reduced unsprung weight and improved heat management.
The high-carbon cast-iron rotor ring is secured to the hat with National Aerospace Standards (NAS) bolts and crimp nuts.
The XD series features a non-directional drilled and dimpled design for enhanced structural support and cooling.
Designed for high performance street, track day, club racing, and rally applications.

No-fit, no charge. Wrong part? Send it back, free return label.

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About this part

Product Details

The T6061-T6 aerospace-grade aluminum hat on these DBA 5000 Series rotors is a key detail, setting them apart for high-performance street use, track days, and rally applications. This isn't just about looks; it's about function. By using aluminum for the hat, DBA significantly reduces the unsprung weight of your brake assembly. This helps the suspension work more effectively, potentially improving handling. Plus, the aluminum hat acts as a heat sink, drawing heat away from the cast iron rotor ring and reducing heat transfer to your wheel hub.

These are 2-piece direct replacement rotors, meaning they're built to fit your 2018 or 2021 Subaru WRX without modification. The high-carbon cast-iron rotor rings are combined with the aluminum hats using National Aerospace Standards (NAS) bolts and crimp nuts, a strong and reliable assembly method. The XD series features a non-directional drilled and dimpled design, which offers enhanced structural support and improved cooling over standard finishes, all while giving your WRX a sportier look.

DBA offers these as complete assemblies, ready to bolt on. They also offer replacement hats and rotor rings separately, so if you decide to stick with DBA 5000 Series in the future, you can often reuse the hats and just replace the rings. This design is all about managing heat effectively and reducing weight for better performance when you're pushing your WRX hard.