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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.
Color: Black.
Compatibility: Bosch SX / Gen4 CX Direct Mount.
Material: 4040 Steel.
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.
Color: Black.
Compatibility: Bosch SX / Gen4 CX Direct Mount.
Material: 4040 Steel.
- Color
- Black
- Type
- Ebike
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