Doppo ATB

Presented by Simworks, this all-terrain bike frame- an update of the original and badge defining model within the Doppo line, was created based on a blueprint with the concept of “walking alone.”

Let your rides unfold as chapters in your novel life adventure. Be it long and winding ribbons of tarmac and gravel, or your favorite singletrack or forgotten two-track. Offer yourself the tools you need to have the memorable experiences and discoveries awaiting you. 

The Doppo All Terrain Bike (ATB), co-developed by SimWorks and Shin Fabrication, is the culmination of our desires to provide a “Swiss-Army” solution for the free spirited all-road rider.  

It’s a bike built for today’s wandering cyclist- with thoughtful and accommodating features throughout to blend timeless design with some of today’s industry standards. Based on a design tailored for going alone, as a modern tourer, it boasts stable operation while moderately loaded down. While offering ample tire clearance in both 700c and 650b platforms, it offers the rider confidence in a variety of situations, both on and off-road, and meets the needs of today’s most discerning 2-wheeled wanderers.

The included, purpose-built fork with full eyelets features hidden mounting bosses under the crown, allowing the fenders to be mounted more securely and the dimensions mirror those of the rear triangle- providing clearance for both wheel platforms.

As a modern tourer for all-terrain / all-road surfaces, it is a bike that will carry you to those places you’ve been longing to see, bring you back again, and keep you grinning along your way.

SIMWORKS / Doppo ATB Frame Set

Size : S M L XL XXL
Color : Sand Beige
Price : $1,999 USD

  • Tange CrMo Steel Tubeset
  • Includes Original Multipurpose Front Fork
  • Lightweight and strong TIG welding
  • 142mm x 12mm PMW dropout
  • 160mm Disc Rotor Max
  • Disc Brake Flat Mount
  • 1-1/8″ Head Tube
  • Seatpost 27.2mm
  • Seat clamp 30.0mm
  • 68mm Standard BSA Thread BB
  • Max Tire Clearance 700c x 43mm, 650b x 55mm
  • Three-Pack Mount under the down tube
  • Fender and Rack Mount
  • Includes F&R Thru Axles
  • Made in Japan

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Shin Hattori Fabrications

Built by Shin Hattori

Manufactured by Aichi’s proud bike frame builder Shin Hattori

The tubing is cut out one by one, milled, and carefully welded. All frames are carefully finished and inspected in his own workshop.

Reliably designed frames made by experienced bicycle frame builders offer the finest attention to fit and finish when selecting your companion for “walking alone” in the mountains and wilderness.

Doppo ATB Fork

A multi-purpose chromoly fork with a full range of eyelets.

By adopting disc brakes, it is possible to convert between 700c and 650b, and 700c has a wide clearance to swallow tires up to 45mm and 650b up to 2.1 “.

Eyelets hidden on the left and right under the crown allow the fender to be mounted more securely. We asked Tange, a world-renowned industry manufacturer, to produce it.


ED Coat : $218 USD-

  • Original Uni-crown Style
  • Tange CrMo Tube Set
  • Length 395mm (Axle to Crown)
  • Rake 47mm
  • 300mm 1-1/8” Straight Steerer Tube
  • Axle Spacing 100mm x 12mm ThruAxle
  • Flat Mount Disc Brake
  • Three-Pack Mount LR
  • Fender & Rack Eyelet
  • Includes Thru Axle
  • Weight 1160g (uncut)
  • Made by Tange Taiwan