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The EBC SR-21 front racing pad for Wilwood Grand National GN4/6R 7520 applications is a sintered compound offered at 20mm thickness for track use. SR-21 pads emphasize thermal stability and repeatable bite during sustained heavy braking, matching larger Wilwood calipers where thicker pad material supports aggressive and endurance driving.
EBC Racing Wilwood Grand National GN4/6R 7520 SR-21 Sintered Race Front Brake Pads
