• Derailleur brands: SRAM
• Categories: SRAM - the Rival story
• Themes: Ultra-lightweight - road racing models
• Country: USA, manufactured in Taiwan (the serial number begins '03T5...')
• Date of introduction: 2014 for model year 2015
• Date of this example: week 3 2015 (the serial number begins '03T5...')
• Model no.: RIV-B1
• Weight: 179g
• Maximum cog: 28 teeth (SRAM)
• Total capacity: 33 teeth (bikeshop folklore)
• Pulley centre to centre: 55mm
• Index compatibility: 11 speed
• Chain width: 3/32”
• Logic: top normal
• B pivot: unsprung
• P pivot: sprung
• Materials: largely aluminium with a composite p-knuckle

Ref. 2270