The Bendix® EnduraSure® is a high-performance double-diaphragm spring brake chamber designed for heavy-duty commercial vehicles, including both drum and air disc brake systems. It replaces the legacy EverSure® series and is engineered to be the lightest weight chamber in its class. It offers a No Touch™ Power Spring - a proprietary design that prevents "coil clash" as well as superior durability and corrosion protection. The standard EnduraSure® is an open-vented design intended for typical line-haul applications. The EnduraSure®-Pro is a sealed version designed for extreme longevity and severe environments.