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Technical Documents
Features
  • Ergonomic design: Refined lever hood for improved ergonomics.
  • Robust internal mechanism
  • Same lever response as Dura-Ace
  • Ergonomic shift stroke movment
  • Effortless shifting:Shift effort is reduced on release lever.
  • Short stroke shifting:Inward shift stroke distance is reduced by 10mm.
Specifications
Model NumberST-6603
SeriesULTEGRA
Optical Gear Displayno
Cassette Compatibility10-speed
Front Shiftingtriple
FLIGHT DECK Compatibleyes
FLIGHT DECK Gear SensorSM-SC70
Bracket Materialengineering plastic
Lever Materialaluminum/clear coated
Shift Cable CasingSIS-SP41
Shift Cablestainless steel
Super SLRyes
Reach Adjusterno
Average Weight490g