GT Over Drive Sprocket

• Sizes: 25T, 28T
• Teeth: 1/8"
• Material: CNC'd 1/4" 6061 Aluminum
• Color: Black, Shiny Silver
•15/16” (24mm) center bore (19/22mm steel hat washers included)
• Compatible with 19mm, 22mm and 24mm spindles
• Modern update to the legendary mid-school Overdrive sprocket.