Description
- Gradation: The number of teeth on each chainring (e.g., 42-34-24T or 42-32-22T).
- Crank Arm Length: Usually 170mm or 175mm, depending on rider size and preference.
- Axle Mount: Common types include square taper and Hollowtech II.
- Compatibility: Gears (e.g., 3×6/7/8-speed) and chain compatibility.
- Features: Technology like Hyperglide, dual SIS index for shifting, and the presence of a chain guard ring.
- Material: Crank arms are typically aluminum, while chainrings are steel.









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