SRAM X-Sync chainrings feature tall teeth with alternating tooth profiles that hold the chain amazingly well and still provide space for mud to clear.

Full CNC AL rings

Ring Position/Type	Chain Retaining Single Ring
Tooth Count	40
Drivetrain Speeds	11
Chainring BCD	110 SRAM Asymmetric
Color	Black
Defined Color	Black
Teeth Count	40T
Asymmetric	True