absoluteBLACK Narrow-wide Round chainrings for Cyclocross in 110 and 130BCD. Size (Mass +/-1g): 130BCD: 42T - 64g ; 38T - 49g 110BCD: 42T - 81g ; 38T - 59g Color Black Compatibility All 5 arm cranks with 110 or 130 BCD Material cnc machined 7075 Txxx Aluminum. Long-lasting construction Finish type II anodizing Mounting holes 110mmx5 or 130mmx5 Its specially designed wide-narrow tooth profile keeps the chain really snug, allowing you to leave your chainkeeper in the garage. It saves more than 100g on average by removing the chainkeeper and the bashring from your existing 1x setup, or more than 200g if using 2x drivetrain. Works with Clutch type and non-clutch rear derailleur. The chainring is optimized for running in the mud, having specially designed chamfers. Always use a new chain with a new chainring. Suitable for Singlespeed conversions
