With a combination of this sprocket hub adapter plate and a standard wheel hub you have a sturdy, lightened, sprocket hub that can be easily allow a sprocket change.
Features: Universal Aluminum Sprocket Hub Adaptor Works with standard wheel hubs (4 on 2-13/16, 4 on 2-7/8, and 4 on 4) Works with Yerf-Dog Spiderbox, allows for sprocket change from the 31T to larger sprockets. Really useful for dual flange hub applications
Product Specs: Outside Diameter: 5.9" Center Bore: 2.3" Quad Bolt Hole Pattern for multiple hubs (color in secondary photo): (4) 5/16" Holes on a 2-13/16" Bolt Circle (green) (4) 3/8" Holes on a 2-7/8" Bolt Circle (yellow) (4) 5/16" Holes on a 3-1/8" Bolt Circle (blue): Yerf-Dog Spiderbox pattern
Sprocket Bolt Pattern: (6) 1/4" Bolt Holes on a 5-1/4" Bolt Hole Circle
Note: This plate is drilled with four 1/2" holes on a 4" bolt circle. However, it was manufactured for a specialty application. If you choose to use this pattern, modifications will be required, which BMI does not provide or support.
Photos with sprockets and wheel hubs are just for reference, this listing is for the adapter plate only! Part Number: 400238