e*thirteen e*spec Direct Mount Chainring - Steel Variant:Bosch CX Gen4 Since its debut in 1998

Since its debut in 1998

Chain management features

the current SILCA Disc Wheel Adapter with 252 gasket excelled by posting a blow-off pressure of 393psi where other designs were unable to reach 120psi

175 x 73mm: 608g

New design in 2025Maximized power & ergonomics

e*thirteen e*spec Direct Mount Chainring - Steel Variant:Bosch CX Gen4 Since its debut in 1998Upgrade your e bike drivetrain with our e*spec Direct Mount Chainrings. Our M3 narrow wide tooth profile reduces weight without compromising on chain retention. While the steel version is a direct OEM replacement, the premium aluminum versions provide cleaner aesthetics, lighter weight, and long lasting performance perfect for when you're ready to upgrade from your original ring. Conquer your e bike trails at a great pricepower up your drivetrain now!