I bought this used and it was my commuter bike for many years. Starting to use it again for a commute segment. I just redid all the brake and shifter cables, relubed the derailleur, and replaced the chain. I also added the v2 front luggage rack and a Kanga rack.
The D8 is a great bike for short neighborhood trips and commutes. It's not small enough to bring on buses with narrow aisles or trains without bike areas, but it fits great in a car trunk, so I recommend it to people with small apartments, for park and ride when you need a last mile vehicle on the other side, as a vacation bike, etc.
There are compromises as with any bike and i'd say that the Link is not very fun on rough, poorly-maintained roads where you can feel the frame flexing, but running it with larger tires helps.
Frame: 6061 aluminum
Suspension: None
Fork: Hi-tensile steel
Crankset: 6061 aluminum, 46t
Bottom Bracket: Semi-cartridge sealed
Rear Cogs: Sunrace, 12-32, 8-speed
Rear Derailleur: Neos 8-speed
Brakes: Rim Linear-pull V-brake
Rims: Aluminum
Front Hub: Formula, 24h
Rear Hub: Shimano coaster, 24h
Wheel Size: 20"
Tires: Schwalbe Citizen, 20 x 1.5
Shifter: SRAM MRX Comp 8 Grip Shift
Handlebar: Tern flat bar
Grips: Biologic (Long L/Short R for grip shifter)
Stem: Tern Physis QR
Seat Post: SuperOversize
Saddle: Tern Sport
Pedals: Suntour folding
Headset: Tern Flux
Chain: Taya Octo
Weight: 26.7 pounds
Gen 1 - Gold metal folding releases. No QR hubs. Neos derailleur. Schwalbe Citizen tires. Old-style fenders.
Gen 2 - Red metal folding releases. QR hubs. Neos derailleur. Schwalbe Citizen tires. Fenders that mount into tubes with large flaps
Gen 3 - Andros stem adjustable handlebars, red plastic folding releases. QR hubs. Neos derailleur. Schwalbe Big Apple tires with black sidewalls. Same fenders as Gen 2
Gen 4 - Andros stem adjustable handlebars, red plastic folding releases. QR hubs. Shimano Claris derailleur. Magnetix 2.0. Schwalbe Big Apple tires with black sidewalls. Same fenders as Gen 2
Gen 5 - Andros stem adjustable handlebars, red plastic folding releases. QR hubs. Shimano Claris derailleur. Magnetix 2.0. Schwalbe Big Apple tires with black sidewalls. Integrated rear fender/rack.