What is the benefit of the Kangaroo Paw ventilation system?

The Kangaroo Paw ventilation system uses a unique pattern of pillars to increase the rotor's surface area by up to 30% and improve cooling efficiency by 20% over traditional designs. This helps dissipate heat more effectively, reducing the risk of brake fade.

What does 'HD' mean for the 4000 Series rotor?

The 'HD' designation signifies that this rotor has a smooth, OE-style finish. It offers the performance advantages of the 4000 Series but maintains a factory-like appearance, which is often preferred for certain racing classes or by drivers who want a more subtle look.

What is the material of this brake rotor?

This rotor is cast from XG-150 high carbon alloyed iron. This specific metallurgy is chosen to better handle the increased stress and heat generated during intense braking applications.

1 / 2

Specifications

Brand: DBA
Part #: DBA42957
UPC: 9316391354990

DBA 07-13 Mazda Mazdaspeed3 2.3L Rear 4000 Series Plain Rotor

Name: DBA 07-13 Mazda Mazdaspeed3 2.3L Rear 4000 Series Plain Rotor
Brand: DBA
SKU: dba-dba-07-13-mazda-mazdaspeed3-2-3l-rear-4000-series-plain-rotor-t14-628147
Price: 219.08 USD
Availability: BackOrder

$219.08

On Backorder

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

Fits 2007-2011 Mazda Mazdaspeed3. This is a rear 4000 Series HD brake rotor from DBA, made with high carbon alloyed iron for improved heat handling.

Key Features

Fits 2007-2011 Mazda Mazdaspeed3 2.3L.
Rear 4000 Series HD brake rotor.
Cast from XG-150 high carbon alloyed iron for improved heat handling.
Features DBA's Kangaroo Paw ventilation for up to 30% increased surface area and 20% improved cooling efficiency.
Smooth, OE-style finish for a factory look.
Thermal Stability Profiling is used in its manufacturing process.

Secure CheckoutFast Shipping631-982-0042

Will it fit your car?

Fits these vehicles

Mazda 3 2007-2011

About this part

Product Details

If you're looking to replace the rear brake rotors on your 2007-2011 Mazda Mazdaspeed3, this 4000 Series HD rotor from DBA is a solid option. It's cast from XG-150 high carbon alloyed iron, which helps it handle the extra stress and heat that comes with harder braking. This material choice means the rotor can stand up to repeated use without warping as easily.

DBA has also incorporated their Kangaroo Paw ventilation system on these rotors. This design uses a series of diamond and teardrop-shaped pillars, increasing the surface area by up to 30% and improving cooling efficiency by 20% compared to standard straight vane rotors. This enhanced cooling is crucial for preventing brake fade during spirited driving or track use. The 'HD' in the 4000 Series HD means it has a smooth, OE-style finish, making it a popular choice for drivers who want the performance benefits of a 4000 Series rotor but prefer the look of a factory-style disc, especially for controlled race divisions.