Terrafirma Cross Drilled and Grooved Brake Discs - Pair Land Rover Discovery 2 Front Discs Terrafirma brake discs offer increased bite from cold, and excellent fade resistance in most 4wd Braking applications. Whether its a steep rocky decent, ploughing through mud and water or just daily driving these brake discs will give excellent stopping performance in all conditions. Quality machining to high tolerances using the correct materials ensure that Terrafirma discs will withstand any test. Grooves are machined into the brake disc to force away the dust and gasses that build up between the pad and the disc, keeping the brakes cooler and reducing fade. The cross drilling contributes to cooling and head dissipation and allows the gasses to escape.Of course they will fill with mud when.
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