4-1/2" Sprocket Adapter With Flange, machined on the outside for a band brake. Fits Tristar wheels. Has a standard 6 bolt pattern for aluminum split sprockets. Great for Split Sprockets We Recommend The Sprocket Hardware kit For This Adapter The three bolt patterns are as follows:
3 holes (5/16") on a 3.75" Bolt Circle
4 holes (1/4") on a 3.75" Bolt Circle
4 holes (1/4") on on a 3.228" Bolt Circle (these holes are a bit differently spaced to accommodate the four holes on the mini-hubs AZ_2561 / AZ_2568 / AZ_2565 ( See Example Rim Pictured above in the Thumbnail Pics)
