
* Compatible with Ultra-Shift chains* Nickel chrome finish on steel cogs* 180% Increase in torsional stiffness vs Ultra-Drive cassettes* Two alloy spiders with 3 steel and 3 titanium sprockets
* Compatible with Ultra-Shift chains* Nickel chrome finish on steel cogs* 180% Increase in torsional stiffness vs Ultra-Drive cassettes* Two alloy spiders with 3 steel and 3 titanium sprockets