Features:

• 1:1 shifter-to-derailleur actuation ratio for precise light-action indexing
• 1:1 shifter-to-derailleur actuation ratio for precise light-action indexing
• Must be used with ESP shifters
• Replaceable 11-tooth pulleys with bushings
• Serviceable sealed pulleys
• Aluminum upper knuckle
• Exact Actuation shifting