1) Going alone.
2) Working on something independently.
3) Nothng equal and superior to everything.

Doppo ATB

This All Terrain Bike frame called “Doppo” was produced and designed to specialize durability of ‘exploring alone’. A basic structure which is optimized in modern tourer style allows large loading capacity and stable ride. Its amazing tire clearance will satisfy your playful demands in any situations regardless of being on and off-road.

This frame is produced by Shin Hattori, a young and energetic frame builder living in Aichi prefecture. Each pipe is welded with the best heat and finished.

Moreover, in order to respond to a variety of options, multipurpose chromoly fork with enough eyelets is coming together. The eyelets hidden underneath of crowns enable to equip a fender perfectly and much easier. This incredible multipurpose fork is produced by world famous TANGE.

We believe in that Doppo will be your best partner who allows you to play and go alone to the nature to seek great joy.

Shin Hattori Production

Multipurpose chromoly fork by TANGE

Geometry and Size

Seat Tube Length (C-T) (mm) 460 510 540 570 600
Top Tube Length (C-C effective) (mm) 515 530 555 580 605
Head Tube Angle (deg.) 71 71.5 71.5 71.5 71.5
Seat Tube Angle (deg.) 75.0 74.0 73.5 72.5 72.0
BB Drop (mm) 75 70 70 70 70
Chain Stay Length (mm) 440 440 440 440 445
Wheelbase (mm) 1013 1017 1038 1053 1078
Standover Height (650x43b) (mm) 722 756 777 800 832
Head Tube Length (mm) 100 115 130 150 190
Fork Length (Axle to Crown) (mm) 395 395 395 395 395
Fork Offset (mm) 49 49 49 49 49

Primary specification

  • Adopted chromoly steel tube set by TANGE
  • Coming with high rigidity multipurpose front fork
  • Light and high strength TIG welding
  • Powder coating with matte olive color
  • Front and rear disc brakes spec
  • 135mm vertical dropout
  • 1-1/8” steering column
  • Convertible for 700c and 650c
  • 68mm standard thread BB shell
  • *Maximum number of front chainring teeth : e.g. Road crank FC-6800 Ultegra, Outer : 50T Max / Inner : 36T Max
  • *There is a possibility that you might not be able to use SRAM AVID Mechanical Disc Brake because it might interfere the frame.


Frame & Fork 1880.00 USD

Available only Fork (not painted) 130.00 USD / (Powder coat) 180.00 USD




We'll ship by Fedex International Economy.

Price includes shipping cost from Japan to any countries in the world, but the customs/duties fees are NOT included.

SimWorks is not responsible for customs/duties charges, and these costs are determined by your local custom office. We can’t determine, in advance, what these fees will be.

If you have any questions, please contact us through here

Doppo ATB Style Sample

Frame : Doppo ATB (L)

Fork : Doppo ATB Fork

Handle Bar : SyCip JJJ Bar

Stem : SimWorks Anna Lee Stem

Brakes and Levers : Shimano LX

Grips : WTB Original Trail Grips

Head Set : Chris King 1-1/8" No Thread Set

Saddle : Selle Anatomica X series

Seat Post : SimWorks Beatnik Seat Post

Crank Set and Drive Component : Shimano LX

F/R Hubs : Chris King ISO Disc Hub Set

Spokes : PhilWood #14

Rims : Velocity Atlas 650b

Tires : SimWorks The Homage 650 x 43b

Fenders : SimWorks Turtle 58

Front Rack : SimWorks Poluck Rack

Rear Rack : On The Road Rear Rack

Bottle Holders : King Cage

Pedals : Crank Brothers

More Photo on Instagram!