E-thirteen E Spec Steel Direct Mount Chainring Cl 53 55

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.Chainline: 53 55mm, 15.5Mm 13.5Mm offsetcompatibility: bosch sx gen4 cx direct mountmount: 4040 steelsize: 34t, 36tweight: 189g

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