4-1/2" Brake Drum, No Flange, Machined ID. Bolt pattern is on a 3.75" bolt circle.
drum has three sets of mounting holes:

3 hole on 3.75" pattern for the Tri-Star wheels
4 hole on a 3.75″ diameter bolt circle
4 hole on a 3.228″ bolt circle to match the Azusa mini-hub
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4-1/2" Brake Drum, No Flange, Machined ID

4-1/2" Brake Drum, No Flange, Machined ID. Bolt pattern is on a 3.75" bolt circle.

drum has three sets of mounting holes:

  • 3 hole on 3.75" pattern for the Tri-Star wheels
  • 4 hole on a 3.75″ diameter bolt circle
  • 4 hole on a 3.228″ bolt circle to match the Azusa mini-hub


We do not accept returns on any electrical components.