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DBA's 4000 T3 slot design consists of a precise array of slots that have been formulated using the latest computer aided engineering design software and extensive on-road and race track tests.

The result is an amazingly quieter, responsive and smoother brake pedal feel. This is achieved from a series of tri-symmetrical 'curved' slots, which when aligned in a specific way, drastically dampen the vibration harmonics or noise, that's commonly associated with traditional straight slot (groove) rotor designs.

The tri-symmetrical slots also increase the number of out-gassing exit points for brake pad friction bases to escape through, further increasing the consistency and effectiveness of every brake stop!