One Way Starter Clutch Gear Hub Bearing Assembly compatible with Aeon 350, Aeon 400, and GOES 360 Max models.Fits as a direct replacement AEO-2812150B-000.Constructed from steel.Gear has 53 teeth.Gear outer diameter: 122 mm.Gear hub inner diameter: 22 mm.Gear hub outer diameter: 39 mm.Gear height: 9 mm.Bearing inner diameter: 39 mm.Bearing outer diameter: 54 mm.Starter clutch inner diameter: 54 mm.Starter clutch outer diameter: 85 mm.Includes one starter clutch gear assembly as shown in product image.Compatible with Aeon Urban 350i, Aeon Elite 350i, Aeon Bistrada 3.5, Aeon Cube 300, Aeon Cube 350 4WD, Aeon 300S, Aeon 320, Aeon 350, Aeon 400 EFI SX u.SM, Aeon 400 Basic/LUX/LE, Aeon 400 Supermoto Basic/LE, Aeon Crossland 300, Aeon Crossland 350, Aeon Crossland 350RX (2010 and later), Aeon Crossland 350X4 (Allrad), Aeon Crossland 400 4x4 (2012 and later), Aeon Crossland 400 (2012 and later), CYR CYR 351, CYR CYR 451, GOES 300s, GOES 350s, GOES 400, GOES 360 Max 4x2 (Aeon), and GOES 360 Max 4x4 (Aeon).This is an aftermarket replacement part.The vehicle manufacturer names are used solely to indicate compatibility.