SimWorks Doppo MTB Frame Large


$ 1,880.00 

  • SimWorks Doppo MTB Frame Large
  • SimWorks Doppo MTB Frame Large

Contact us at the link below for current availability.

The Doppo mountain bike frame, developed as the third and latest in the Doppo series, was thoughtfully created with the intention of "going alone".

SimWorks believes that the most important consideration of "going alone" is above all- trust. There’s the trust that your equipment will carry you as far as you wish to go and then back again.  And there’s the trust that the details were ironed out to produce a machine that you can feel playful with and connected to. 

How did we want the Doppo mountain bike to be used? What kind of people will trust Doppo to  be a worthy companion? The conclusions drawn from these critical questions gave rise to a timeless design infused with some modern versatility and flare. First and foremost, the durability and reliability of the frame should provide ease of mind. Furthermore, the overall performance of the machine is a blend of characteristics meant to lend themselves to versatility in riding styles and environments. Simworks believes that by placing an equal emphasis on dependability and versatility, a more reliable and enjoyable Doppo bike would be created.

The main tubing of the Doppo MTB uses the world-famous Tange high-quality chromoly steel tube set-similar to our Doppo ATB.  Emphasizing front end rigidity, the 44mm head tube provides a modern MTB standard for equipping the bike with either the included rigid Tange fork, or your favorite suspension fork. Doppo MTB frame is equipped with an original disc mounting system with a unique shape providing for easy adjustments for owners and service people.

Specified with a 73mm JIS threaded bottom bracket shell and 148x12 rear Boost TA spacing, in addition to a 110mm Boost-spaced fork provide the bike with a stable pedaling platform and an axle spacing that lends itself to strong wheels accommodating wider footprint tires. In addition, 2 standard bottle cage mounts on the frame and an additional 3-hole on the underside of the down tube allow installation of an oversized bottle or cargo cage, etc. A port for an internally routed dropper post adds to the trail-ready credentials. 

The original fork produced by Tange is especially designed in concert with current bikepacking/trail standards. Drilled for a diving-board plate and with dual 3-pack bottle boss mounts that you could piggy-back rack struts to, the fork will accommodate a compact front rack with ease. The Chromoly fork is at home with the on/off roads that inevitably occur during your usual exploration ride. No one is going to tell you not to mount a basket to the front end and aimlessly wander from town to the forest. 

When you want to enjoy a more enjoyable trail ride in Satoyama, or Coyote Wall, Simworks believes that most cyclists will prefer the use of a suspension fork. Of course, the Doppo MTB is designed with the option to equip the front end with moderate suspension.

By installing a fork with approximately 120mm of travel, you can use it as a plush trail bike. In conjunction with a slightly longer wheelbase and capacity for 27.5 tires up to 2.8”- the Doppo MTB oozes stability and mild trail manners. Swapping between rigid and suspension minimally impacts the bike’s geometry. 

As with the beloved Doppo ATB frame, the new MTB frames are produced by Shin Hattori, an accomplished builder based in Aichi prefecture. Shin has demonstrated his skill and care in each of these frames.

Built in small batch runs- each frame is mitered, milled and welded methodically, and then hand-finished to tight tolerances.

A well-designed frame crafted by an experienced and thoughtful frame builder can be the greatest companion when facing the task of "going alone"- whether in the mountains or on forgotten roads.


Born as a trail bike, the Doppo MTB is not a bike that pursues outstanding speed and intense action, but as a spirited mountain bike- to embody the concept of the Doppo series, "to go alone", the Doppo MTB is a tool for exploration- both within yourself and in the natural world.

The concepts inherent to the original mountain bikes still provide the foundation for a bike that can go anywhere with your own will and courage, whether or not there is a road, and it makes us always dream of the next adventure. 

The experiences that we seek- facing nature at our own pace, pushing over the rut, setting a cadence to match our breath. To hear the sounds and voices of plants and creatures, to bathe in the forest and mountains and the river valley. This Doppo mountain bike was born as your favorite trusted companion

【SIZE CHART|Geometry】

Seat Tube Length C-T(mm) 430 460
Effective Top Tube Length(mm) 585 610
Reach (mm) 413 436
Stack  (mm) 593 598
Standover 27.5x2.8"(mm) 749


Head Tube angle (deg.) 69.5 69.5

Head Tube Length (mm)
110 115

Seat Tube angle (deg.)
74.0 74.0
Chain Stay Length (mm) 440 440
BB Drop (mm) 60 60
Wheelbase (mm) 1098



Main Specifications

Uses Tange Chromoly Steel Tube Set

・44mm head tube

・Light weight and high strength TIG welding

・Recommended suspension stroke: 120mm stroke for 27.5"

・Can be used with up to 180mm disc rotor

・Rear 12mmx148mm BOOST

・Max tire clearance: 27.5 x 2.8" / 29 x 2.4"

・73mm JIS Threaded BB Shell

・Seatpost size: 30.9mm

・Seat clamp size: 34.9mm

・Front chainring single up to 34T 

・Seat tube has holes for internal routed dropper post

・Eyelets compatible with anything cage under the down tube

・Front and rear thru axle included

*Tange fork included with the frame set can be purchased separately. However frame is priced only for sale with included fork

Share this


Similar Products