SRAM EAGLE X-SYNC 2 COLD FORGED CHAINRINGChainrings, chains and cassettes eventually wear out. When these parts wear out, they will start to cause shifting problems and other performance issues. The new X-Sync 2 Chainring design increases chain retention, wear life, and reduces friction and noise. Eagle technology is the newest 12-speed drivetrain system from SRAM and creates the smoothest, quietest, longest lasting and most efficient drivetrains. The longer, positive-rake tooth shape has been designed to work perfectly with the new Eagle chain to increase chain retention and overall pedaling efficiency. A 3mm offset is for Boost spacing and 6mm is standard, non-Boost spacing. Features X-Sync 2 increases chain retention and wear life Eagle technology for 12 speed SRAM drivetrains Positive-rake tooth shape increases chain retention and pedaling efficiency | Sram | Eagle X-Sync2 Cold Forged Chainring | Black | 6Mm, 30 Tooth, Direct Mount | Aluminum