e*spec Steel Direct Mount Chainring 36T e*thirteen

Helix Core e*spec Direct Mount Chainrings feature our narrow-wide tooth profile, for reliable chain retention and an extra long wear life. Designed with an adjustable 13.5-15.5mm offset via spacer, they provide adaptability to both 53 and 55mm chainlines for Bosch CX and SX motor systems. Helix Core e*spec rings are cold-formed from steel then heat treated to provide excellent durability and toughness, all at a price that's easy on your wallet. PRODUCT SPEC Chainline 53/55mm 15.5mm / 13.5mm Offset Color Black Compatibility Bosch SX / Gen4 CX Direct Mount Material 4040 Steel Size 36T Weight 189g