e*thirteen Helix R Chainring - 30t 11/12-Speed 3mm Offset SRAM 3-Bolt DM Black. The e*thirteen Helix R 3-Bolt Direct Mount Chainrings engineered for SRAM 3-Bolt crank systems merge aesthetics with robust durability. e*thirteens narrow-wide tooth profile ensures compatibility with Shimano and SRAM 11 and 12-speed drivetrains. Manufactured from AL-7075-T6 aerospace-grade aluminum the rings are CNC sculpted to provide low weights. Elevate your 3-Bolt Cranks diversify drivetrains reduce weight and bring a new aesthetic to your bike with the Helix R 3-Bolt Chainrings.

3mm Offset 3-Bolt Direct Mount design for use with SRAM™ 3-bolt direct mount compatible cranks

M4 narrow-wide tooth profile provides Shimano and SRAM 11/12-speed chain compatibility excellent chain retention and reduced wear

Forged from premium 7075- T7 aluminum then extensively CNC optimized for industry leading weights and a unique high-end full CNC aesthetic

Durable 7075-T6 construction for long wear-life stiffness and strength