SRAM Rival X-Sync Direct Mount Road Chainring - 44t 12-Speed 8-Bolt Direct Mount 6.5mm Offset BLK E1SRAM Rival X Sync Direct Mount Road Chainring 44t 12 Speed 8 Bolt Direct Mount 6. 5mm Offset Black E1. SRAMs light stiff and durable Rival X Sync direct mount aluminum road chainrings let you pick the exact gearing you want and quickly swap sizes. Our X SYNC technology keeps the chain where you need it to be too. X Sync wide tooth narrow tooth chainring technology provides maximum chain control Aluminum laser etched chainring is designed to be more