e*thirteen Helix Core e*spec Chainring Variant:Bosch SX / Gen4 CX ODI has redefined grip performance

ODI has redefined grip performance again

No mess or wastage: Patented silicon dispenser puts a drop on each link

increased power transfer

and most other components with a hex fitting

SiS Creatine is tested under the Informed Sport Certification program

e*thirteen Helix Core e*spec Chainring Variant:Bosch SX / Gen4 CX ODI has redefined grip performanceHelix Core e*spec Direct Mount Chainrings feature our narrow wide tooth profile, for reliable chain retention and an extra long wear life. Helix Core e*spec rings are cold formed from steel and then heat treated to provide excellent durability and toughness, all at a price that's easy on your wallet. Features Long lasting and economical steel construction. M4 narrow wide tooth profile for excellent chain retention and Shimano SRAM drivetrain