Dia Compe ENE Flat-1 20" Wheel Urban Frameset 460mm

The Flat-1 is the ultimate urban mini velo frameset. Designed for the streets of Japan, this frame was born out of the need for a compact bike on narrow streets and to store at home.

Available in one adult size, this single speed/fixed gear format frameset accepts 20 x 1.3/8" or 20 x 1.75" wheels (406 or 451 ETRTO) meaning the brake drop will alter depending on the wheel size used. Example – when using a 20 x 1 3/8 wheel size we recommended using our BRS 101 brakes which have a drop of 43-57mm.

We these framesets its important to think about gearing when selecting components for the build, due to the small wheel size a larger gearing should be considered to give a ‘normal’ gear ratio (i.e if running a 16t freewheel, then the chainring will probably want to be circa 50t+)

Geometry

• Head Angle: 73 deg
• Top tube: 529mm
• Seat Tube: 460mm
• Chainstay: 380mm
• BB to fork: 572mm
• Rear dropout: 120x10mmx6t
• Axle to brake: 280mm

Specifications

• Material: Tig welded 4130 Cr-Mo
• Headset Compatibility: Threadless 1 1/8”
• Seatpost: 27.2mm
• Seat Clamp: 31.8mm
• Max tyre clearance: 451 = 40mm
• Bottom bracket: BSA Threaded 68mm