DBA 4000 HD Rotor LEFT SINGLE RCM 10% With an industry-leading reputation and

With an industry-leading reputation and deep knowledge of high-performance BMW cooling systems

During closed or light throttle

Increased bottom-end power and spool

our engineers identified that a counter-flow system can allow for improvements in thermal efficiency due to the way they pair the coolest water with the coolest air

and manufactured  in the USA

DBA 4000 HD Rotor LEFT SINGLE RCM 10% With an industry-leading reputation andDBA's 4000 Series disc brake rotors are a direct replacement single piece brake rotor, designed for drivers seeking upgraded performance braking in the Specifications tab and beyond standard OE levels. Cast from XG 150 high carbon alloyed iron and undergoing Thermal Stability Profiling (TSP), DBA's metallurgy is able to handle the increased stress and heat generated under intense braking applications, time and time again. Featuring DBA's patented