Light alloy chainrings with XPSS™ (eXtreme Performance Shifting System)
Chainrings with hard anodization treatment
8 pins on the large chainring
Integrated ULTRA-TORQUE™ semi-axles
Requires ULTRA-TORQUE™ BB cups
XPSS™: exclusive design of the eight upshift zones and two downshift zones of the chainring. The specific profile of the teeth and the zones dedicated to upward and downward chain movement enable fast and precise shifting in all conditions.
ULTRA-TORQUE™ BOTTOM BRACKET: pressure on the pedals is transmitted efficiently without any loss of power.
8 CHAIN UP SHIFT AND 2 CHAIN DOWNSHIFT ZONES: Faster and more precise shifting, even under stress.