DBA 43050-10 4000 Series HD Front Brake Rotor for Subaru WRX STI with 6-Piston Brembo Calipers

Cast from XG-150 high carbon alloyed iron and undergoing Thermal Stability Profiling. DBA's metallurgy is able to handle the increased stress and heat generated under intense braking application time and time again. Featuring DBA;s patented Kangaroo Paw ventilation that implements a series of 144 diamond and teardrop patterned pillars. DBA achieves up to a 30% increase in surface are and 20% improvement in cooling efficiency compared to traditional straight vane design. 4000 SERIES HD variant features a smooth OE style rotor finish, popular for drivers looking for the benefits of a 4000 Series rotor but requiring an OE style look, such as controlled race divisions. DBA's 4000 Series HD variant features a smooth OE style rotor finish Popular for drivers looking for the benefits of a 4000 Series rotor but requiring an OE style look, such as under controlled race division, XG-150 High Carbon Alloyed iron, TSP-Thermal Stability Profiling, THGP - Thermo-graphic paint markings, Direct replacement suitability, Moisture proof corrosion protection packaging

Brief Description: The DBA 43050-10 4000 Series HD front brake rotor is engineered for Subaru WRX STI applications equipped with 6-piston Brembo calipers. It combines high-carbon alloyed iron, advanced thermal treatment, and efficient ventilation to provide consistent braking performance during demanding street, performance, and controlled racing use. The smooth, OE-style rotor finish delivers a factory-inspired appearance while retaining the performance advantages of DBA’s 4000 Series design.

Cast from DBA’s XG-150 high-carbon alloyed iron, this rotor undergoes Thermal Stability Profiling (TSP) to help manage the stress and heat generated during repeated high-load braking. DBA’s patented Kangaroo Paw ventilation system uses 144 diamond- and teardrop-shaped pillars to improve airflow and heat dissipation compared with conventional straight-vane designs. This helps support more stable rotor temperatures and dependable brake response during repeated applications.

The 4000 Series HD variant includes THGP thermo-graphic paint markings that help indicate rotor operating temperatures during performance driving. It is designed as a direct replacement for compatible factory rotors, simplifying installation while providing a durable upgrade for drivers who need increased thermal capability without an aggressive, non-OE appearance. Moisture-proof corrosion-protection packaging helps preserve the rotor during storage and transportation.

Fitment: Designed for select 2018 and 2021 Subaru WRX applications equipped with 6-piston Brembo calipers. Verify vehicle year, brake-caliper configuration, and application details before ordering.

What's Included: One DBA 43050-10 4000 Series HD front brake rotor.

Features:

• XG-150 high-carbon alloyed iron supports durability and resistance to repeated heat cycling
• Thermal Stability Profiling helps manage thermal stress during intense braking applications
• Patented Kangaroo Paw ventilation uses 144 diamond- and teardrop-patterned pillars for efficient cooling
• Smooth OE-style finish provides a factory-inspired appearance for performance-focused applications

Fitments:
2018 Subaru WRX Base
2018 Subaru WRX Limited
2018 Subaru WRX Premium
2021 Subaru WRX Base
2021 Subaru WRX Limited
2021 Subaru WRX Premium

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1