The NSB narrow wide chainrings use a proven variable tooth pattern mated with a standard chainring tooth profile to help retain the chain on the front ring during all types of riding. The profile maintains excellent wear for a durable product and has an optimized chainline for 1x systems. Utilizing the most common bolt pattern, 104mm BCD, these rings can mount to almost any crank. Specifications: 104mm Bolt Diameter Circle (104 BCD) Chainline: 28T: Fits any standard 64/104BCD cranks. The 28T chainring uses 64mm BCD to mount onto the crank arm and is offset 5mm to a 49mm chainline. Machined from solid 7075 T6 Aluminum Anodized Black with Laser Etched Graphics Compatible with all 9, 10, 11, & 12 speed SRAM drivetrains Compatible with all 9, 10, & 11 speed Shimano drivetrains Weight: 45g MODEL ITEM #: CR2803-B (28T)MODEL ITEM #: CR3003-B (30T)MODEL ITEM #: CR3203-B (32T)
