Profile Imperial sprockets are CNC machined from 6061 Aluminum made in the USA. The Imperial is “bolt on” style and requires a sprocket bolt to be attached to crank arm.
- All Profile chainwheels have a .875" spindle hole with adapter to fit 0.75" spindles - they do not fit 1 or 2-piece cranks
- 3/32” teeth for 3/32” and 1/8” chains
- Material: Aluminum
- Chain Width: 3/32"
- Color: Black
- Bore: 19mm
- Tooth Count: 25
- Adaptor: None
- Interface: Bolt Drive
- Defined Color: Black
