NSB Variable Tooth Chainring, 4 Bolt, 64 BCD, 28 Tooth, Black

North Shore Billet's narrow-wide chainring uses a proven variable ''thin-thick'' tooth pattern mated with a standard chainring tooth profile to help retain the chain during all types of riding. The 28T ring is machined from solid 7075 T6 aluminum, anodized black with laser-etched graphics, and built with a 5mm offset to achieve a proper 49mm chainline when mounted to the inner position of a standard 64/104 BCD 4-bolt crankset. It is compatible with 9, 10, and 11-speed drivetrains and precision CNC machined in Whistler, BC.