X-SYNC 2 Oval - SRAM has always been committed to providing riders with components that match their individual riding style. Since the pedal stroke of some riders undoubtedly benefits from oval chainrings, SRAM has developed the new X-SYNC 2 Oval chainrings. This gives them the necessary advantage. They are the only oval chainrings featuring our original X-SYNC 2 tooth profile, making them the only ones on the market that are 100% optimized for Eagle. X-SYNC 2 EAGLE is the latest evolution of our SRAM X-SYNC technology. The tooth profile of the chainring increases chain tension and efficiency while pedaling. The lifespan of the chainring is extended as X-SYNC EAGLE technology reduces friction and contamination. • Details: - 6 mm offset compatible with GXP and BB30 • Material: Aluminum • Application: MTB • Derailleur • Front speeds: 1-speed • Rear speeds: 12-speed • Chainrings • Mounting / Number of holes: Direct mount.