ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 34T, 13mm Offset, Bronze Code:CR5ERA-103 - Left (Brake disc side):

- Left (Brake disc side): 21mm

External Blip mount for aero extensions and base bars

It sits high on the upper back

DTD tools are a precision component Torx®-compatible driver machined to exact standards to ensure a perfect fit on compatible component fasteners

ethirteen Helix Race espec Direct Mount Chainring for Bosch CX/SX - 34T, 13mm Offset, Bronze Code:CR5ERA-103 - Left (Brake disc side):The ethirteen Helix Race espec Direct Mount Chainring is the ultimate premium upgrade for high performance Bosch e bike systems. Forged and CNC machined from ultralight, high strength 7075 T6 aluminum, this 34T one piece direct mount chainring features a 13mm offset to achieve perfect chainline alignment on Bosch CX Gen 4, Gen 5, and SX motors. Equipped with an updated M4 narrow wide tooth profile and finished in a striking bronze anodizing, it