Narrow wide chainrings for Shimano direct-mount cranks. These chainrings are designed to provide an optimal chainline, giving the smoothest shifting across the whole cassette.
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 – these rings can mount to almost any crank.
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