A new offering of Abex commercial-vehicle drum-brake block that meets FMVSS 121 Reduced Stopping Distance (RSD) requirements is now available, manufactured by Federal-Mogul.

FMVSS 121 was amended to reduce the specified stopping distance to 250 ft — a 30% reduction — for new truck tractors built on or after August 1, 2011.

The new Abex RSD friction includes three application-specific formulations engineered to enhance overall performance while meeting the new FMVSS requirement.

RN is an organic, copper-free formulation for 20,000-lb axle ratings; RSM is a semi-metallic, with a 29,000-lb axle rating, for severe-service applications; and RSC is a semi-metallic combo formulation with a 23,000-lb axle rating.

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