Dahon salespeople liked to claim that the Dahon Neos 2.0 is a ground-breaking step up from the genuinely revolutionary (in its time) Dahon Neos. I haven’t been over it with a micrometer, but it seems to me that the differences are small - you get an Allen key cable clamp bolt, a nicer adjustable cable outer stop, a slightly redesigned top knuckle and a gratuitous black piece that makes the visible parallelogram plate look prettier (or black).

Dahon did claim that the Neos 2.0 can handle a 32 tooth cog, and that it is 8 speed compatible - so maybe they have tweaked the dimensions - or maybe not.

• Derailleur brands: Dahon, manufactured by SR SUNTOUR
• Themes: Small wheels on my wagon
• Country: USA manufactured in Taiwan
• Date of introduction: 2007
• Date of this example: unknown
• Model no.: unknown
• Weight: 229g
• Maximum cog: 32 teeth? (Dahon use it up to 32 teeth)
• Total capacity: 21 teeth? (Dahon seem to use it with a single chainring and an 11 to 32 cassette).
• Pulley centre to centre: 42mm
• Index compatibility: 8 speed
• Chain width: 3/32”
• Logic: low normal
• B pivot: unsprung
• P pivot: sprung
• Materials: largely steel with an aluminium rear knuckle and a plastic front knuckle