Our Shimano HG12-specificchainring tooth profile is mated with our proven narrow-wide tooth pattern to help retain the chain on the front ring during all types of riding. Utilizing the most common bolt pattern; 104mm BCD.
104mm Bolt Diameter Circle (104 BCD)
Bottom Bracket Types: BB30 GXP Boost
Chainline: This varies with your crankset
30T: ~50mm on a 2×10 mid-ring mounting position
32T, 34T, 36T, 38T: ~52mm on a 2×10 mid-ring mounting position