Drum Bolt Hole Diameter: 1.31 in
Drum Overall Depth: 9.75 in
Brake Surface Diameter: 16.50 in
Drum Brake Surface Flat Depth: 6.50 in
Brake Shoe Width: 6 in
Drum Bolt Hole Count: 10
Mounting Type: Outboard
Balanced:Yes
Mounting Surface Flange / Back Plate Thickness: 0.62 in
Drum Bolt Circle Diameter: 11.25 in
Maximum Wear Diameter: 16.62 in
Drum Pilot Diameter: 8.78 in
 
Ensuring Expertise Built In™, the OTR 16.5" x 6" Outboard Mount Balanced Brake Drum showcases precise cast holes that provide the same fit, function, and form as typical drilled holes. When properly torqued, this brake drum will not move in the radial direction during acceleration or braking loading. Experience reduced decentralization risk, as well as resistance to heat checking and brake fade. This brake drum boasts exceptional concentricity coupled with superior durability and strength. The OTR brake drum also boasts cutting edge technology, providing your rig with the stopping distance your truck requires. Being designed, cast, and machined to all applicable industry standards, this heavy duty brake drum replacement restores your semi truck’s brake assembly to its original working order.