Inch - Metric: Inch
Outside Diameter - Inch: 4.391
Outside Diameter - Millimeter: 111.531
Other Features: Face Dia 3.844 | 19 Tangs
Inside Diameter - Millimeter: 80.696

Chain Pitch - Inch: 1
Chain Size: 80
Chain Pitch - Millimeter: 25.4
Chain Type: Roller Chain
Bearing Type: Ball Bearing

Inch - Metric: Inch
Material: Steel
Outside Diameter - Inch: 4.34
Length Thru Bore - Millimeter: 15.469
Other Features: Pre Lubricated

Bore Profile: Finished Bore
Component: Hub
Inch - Metric: Inch
Material: Aluminum
Outside Diameter - Inch: 4.25

Length Thru Bore - Millimeter: 44.45
Other Features: Components May or May Not Intermix Among Brands | 4 Jaws | No Metal to Metal Contact
Mounting Method: Set Screw
Hub Diameter - Millimeter: 81.026
Coupling Type: Jaw Coupling

Bore Profile: Finished Bore
Component: Hub
Inch - Metric: Inch
Material: Sintered Iron
Outside Diameter - Inch: 4.5

Length Thru Bore - Millimeter: 49.276
Other Features: Components May or May Not Intermix Among Brands | 3 Jaws | No Metal to Metal Contact
Mounting Method: Set Screw
Hub Diameter - Millimeter: 101.6
Coupling Type: Jaw Coupling

Component: Spider
Inch - Metric: Inch
Material: Hytrel
Outside Diameter - Inch: 4.5
Outside Diameter - Millimeter: 114.3

Other Features: Components May or May Not Intermix Among Brands
Coupling Type: Jaw Coupling
Torque: 4680In-Lbs