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)

• Zinc-Plated Steel
• 1" or 1-1/4" Bore with 1/4" Keyway
• Strong, yet Lightweight
• Standard 5.25" Bolt Circle

Sprocket Hub Billet Aluminum. Silver Or Black.
1" or 1-1/4" axle.
Please Pick Size And Color In Options Tab.

ARC Billet Sprocket /Rotor Hub for a 1" axle

High End Performance Sprocket Hub.Great gor split sprockets . Tapper Lock Design Allows Equal Pressure Around Shaft For Optimal Holding Power. Great For Drag Racing Or Large Horsepower Machines. The Best Hub on The Market. Made in The USA. See Thumbnail Images Above For The Type Of Sprocket This Works Best With.