e*thirteen Race 8-Bolt Chainring 30T 3mm Offset

e*thirteen Helix Race 8 Bolt Chainring 30T 3mm Offset Shimano/SRAM 11/12 speed Chain Compatible Black Helix Race 8-Bolt Chainrings are an upgrade to any 8-bolt drivetrain. Exquisitely machined from 7075-AL, they're stiff and durable, and provide a significant weight reduction over competitors. A unique four-bolt locking interface reduces assembly weight while improving longevity and ease of assembly and maintenance. Featuring e*thirteen's M4 narrow-wide tooth profile, they deliver excellent chain retention, long wear-life, and cross-compatibility with Shimano® and Sram® drivetrains, including T-type™