OTR 16.5" x 6" Balanced Outboard Mount Brake Drum. This heavy-duty, balanced outboard-mount brake drum is engineered for commercial fleet applications where predictable stopping power and component longevity are essential. The balanced design ensures smooth rotation and minimizes vibration at highway and stop-and-go speeds, helping maintain consistent brake shoe-to-drum contact and reducing uneven wear. As an outboard mount drum, it is optimized for precise alignment within outboard braking systems, supporting repeatable engagement characteristics across service intervals. Built with industry-standard pilot dimensions, this drum is specified with an 8.78" pilot diameter and a 6" brake shoe width and is manufactured to meet common OEM cross-references for medium-duty and heavy-duty steering and drive axles. The drums mass”approximately 108 lb”contributes to rotational stability and thermal capacity, which, combined with its venting and material design, helps dissipate heat generated during repeated stopping events to reduce the onset of brake fade. Reduced vibration and better heat management translate into measurable operational value: more consistent stopping performance, slower progression of brake component wear, and longer service life for shoes and related hardware. For fleet maintenance planners, using a balanced outboard mount drum can simplify alignment checks and decrease the frequency of corrective adjustments, supporting higher vehicle uptime and more predictable maintenance intervals. The design and manufacturing processes adhere to established heavy-vehicle brake standards, providing a rugged replacement option that aligns with common aftermarket cross-references and fleet maintenance practices.