• Derailleur brands: Vision
• Themes: Ultra-lightweight - road racing models
• Country: Taiwan
• Date of introduction: 2013?
• Date of this example: 2013? (coded 3113, which may mean week 31 of 2013)
• Model no.: VT800
• Weight: 186g
• Maximum cog: 28 teeth (source: Vision although they claim that the nearly identical VT801 can only accept a 25T sprocket)
• Total capacity: unknown
• Pulley centre to centre: 62mm
• Index compatibility: 10 speed
• Chain width: 3/32”
• Logic: top normal
• B pivot: sprung
• P pivot: sprung
• Materials: Mainly carbon, with an aluminium b-knuckle and inner pulley cage plate.

Ref. 1473