This Narrow/Wide chainring by Blackspire is suitable for use with all 104 mm BCD cranks. These chainrings are CNC machined from 7075-T6 aluminum for long life. Cut from 4mm aluminum sheet for lightweight and strength. 30T cut from 7mm aluminum sheet. 30T features built-in tabs for a 49.5mm chainline. 30T is threaded for M8 x 11mm steel bolts. For use with groups with 9, 10, 11 or 12 gears. Available in 7 anodized colors with laser etched graphics. Our 104mm BCD Narrow/Wide Snaggletooth chainring features our highly sought after tooth profile. Combine this chainring with any modern clutch derailleur and never worry about the chain coming off your ring again. For 9 speed drives you must use a 10 speed chain.
