SRAM Apex 1x Gravel ChainsetSRAM Apex 1 1 x 11 Gravel Chainset The Apex 1 crankset completes the Apex 1 group, Sram's most affordable road 1x drivetrain yet. Using patented X Sync technology, the Apex 1 crankset runs silent and secure. Riders looking for a wide gear range and shifting simplicity at a great value will find it in Apex 1. Sram 1x road 10 speed and 11 speed compatible Aluminum chainring and crankarms Patented X Sync chainring technology provides unparalleled chain