The Meritor Opti-Cast Brake Drum is designed for light and medium duty on-high applications. Weighing 103.5 lbs, the Opti-Cast allows users to haul heavier loads at the 23,000 GVWR while providing full FMVSS 121 compliance. The drum is designed for tractor and trailer applications across light and medium duty cycles. It is compatible with most popular wheel-end configurations and axle ratings, and it is available in single, pallet or trailer-load quantities.