GR- touring bike compatible with 50c tires


>Touring bike compatible with 50c tires

GR is a 700c gravel bike frame with variety of functions. It is such a versatile touring bike you can enjoy gravel to tarmac. Accepting wide variety of tire width and flex titanium frame make any terrain so enjoyable.
It offers sloping geometry for dropper post use, stability from low BB height and quick handling. Light weight and water-resistant titanium frame will make your good partner of your next great trip!


GR/Gravel&Road/Touring bike compatible with 50c tires

>Electric components compatible

The inside of the joint of main tubes are widely cut out so electric components cables and junctions can easily go through. You can run it with the latest components!

>Multiple accessary mounts

It has M5 mounts such as 6 on the downtube, 2 in seat tube, 4 in seat stays and 7 in top tube. Various accessories can be installed at your own choice. Outer cable mounts are also removable with the bolts. It is also bolt-on top tube bag compatible. You may be worried that too many holes take some water inside the frame but titanium never rusts so don’t worry!


>Dropper post compatible

The diameter is 27.2mm. Dropper post compatible which is indispensable to off road riding. The seat tube is rather shorter compared to the reach so the sloping geometry offers a lot of range of motion of the post. The cable can run either internally in the down tube or externally along down the seat tube.

※The information in this document is subject to change without notice.

  • Frame material: 3-2.5 titanium
  • Head tube:44mm
  • BB: PF30
  • Seat post: 27.2mm
  • Rear end: 12x 142 TA
  • Brake: flat mount 140-160mm
  • Fork: AC 396 (48mm off set)
  • Weight: 1590g (Small size), 1640g (Medium size), 1700g (Large size)
  • Size: Small 150cm-170cm, Medium 160cm-180cm, Large 170-190
  • Price: (with small parts and wires)

・By 700 x 50c / 27.5 (650B) x 2.1″ tires.

The geometry is a low BB height for riding stability. The sloping style is designed for use with a dropper post.


The tire clearance is up to 700 x 50c (50mm tire width) or 27.5” (650b) x 2.1(55mm tire width). *It is subject to rim width and tire nob form. It may cause the contact with the chain/seat stays. (The chart shows the exact size.)
The chain ring is double with 50t/34t. The chain stay has crushing fitting to the 43.5 chain line.

Small parts and wiring

The downtube has 2 internal cable routing. The frame has no outer cable mounts but 3 different types of removable wire mounts can be installed as you like. 3 types of wire mounting parts are offered, single, double and straight ones.
With electric components you don’t have to install any mounts so very clean look can be achieved (except for brake cable on left chain stay)

Aggressive drop bar downhill with 27.5x 2.1 tires by Mr. Mikami!