DBA's Street Series rotors feature: Kangaroo Paw ventilation-144 diamond and tear drop pillar ventilation system increases surface area resulting in greater heat dissipation This results in increased braking effectiveness and reduced brake fade, Direct replacement suitability, CBN -Cubic Boron Nitride machined turned provides lower Disc Thickness Variation and parallelism resulting in less occurrence of brake shudder, Moisture proof corrosion protection packaging. 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.. 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 10-11 Ford F-150 7 Lug 4WD Rear 4000 Series Standard Rotor. Disc Brakes Australia Brake Disc. Rear 4000 Series HD Brake Rotor. DBA 4000 Series HD Brake Rotor. 4000 Series HD Brake Disc. Disc Brake Rotor. Brake Rotor. Brake Disc

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