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For high-end internal gear systems
The 8-spline interface between the BB and crank arm forms a strong highly rigid connection that reduces weight and increases strength
3 x Adhesive Bandage
Our track cogs are designed to spin onto standard ISO-threaded (1
Weight: 252g
Shimano Ultegra CN-6701 10-spd Chain bulky For high-end internal gear systemsUltegra now features an asymmetrical (directional) chain. Shifting precision and smoothness has been significantly improved through the use of different inner and outer plate chamfers and dimensions to accommodate the different shifting requirements of moving the chain inward and outward on the drivetrain. Redesigned inner and outer plates New shaped outer plate New shaped inner plate for smoother rear shifting Enhanced press in construction for