| - Steel-titanium (3 Ti sprockets) version: excellent compromise between weight savings and cost- Ultra-Shift aluminium frame for last two sprocket triplets: precision and greater stiffness, weight savings- Ultra-Shift sprockets synchronization: improved shifting precision, less stress for the chain- Ultra-Shift teeth shape: upshift optimization- Optimized teeth space: longer life, lower wear- Nickel-chrome surface treatments on steel: longer life, lower wear- Light-alloy lockring: weight savings- Weight: 201g |