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TanTan GR257
Frame

TanTan GR257

TanTanTanTan
Weight1257g
Year2026
CategoryFrame

Reviews & Ratings

Cyclocross Frames, Wheels & Components on Chinertownabout 1 hour ago
TanTan GR257. 57mm clearance, UDH hanger, storage box etc just released.

The TanTan GR257 is a carbon gravel bike frame with a max tire clearance of 700x57c and UDH hanger, sharing geometry with the Mondince FM346. It is available in sizes 48-61cm, but the 61cm size is reportedly not yet produced and may never be. The storage compartment uses an older style cover (non-magnetic). A complete bike build with Shimano GRX is offered for $1999, which is considered good value. Custom builds with Di2 and custom paint are also possible.

AI Summary

Pros

  • Good value complete bike at $1999
  • Custom build options available (Di2, custom paint)

Cons

  • 61cm size likely will never be produced (mold not made)
  • Storage box uses older style cover that may be problematic

Key Points

  • Carbon gravel frame
  • Max tire clearance 700x57c
  • UDH hanger

more key points in the review

View Thread
Purchase

Where to Buy

TanTan 2026 Carbon Gravel Disc Bike Frame GR257 Max Tire 700X57C UDH hanger Available Size 48/51/54/56/58/61cm

TanTan 2026 Carbon Gravel Disc Bike Frame GR257 Max Tire 700X57C UDH hanger Available Size 48/51/54/56/58/61cm

tantanbikes.com
🇺🇸$629.00
Checked about 1 hour ago
$629.00· tantanbikes.com
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Specifications

Attributes

Frame TypeGravel
Frame MaterialCarbon
Brake MountFlat Mount Disc
Bottom BracketT47
Seatpost27.2mm
Front Axle12x100mm Thru-Axle
Rear Axle12x142mm Thru-Axle
Max Tire Width (mm)57
Headset Type1.5" Straight
Di2 CompatibleYes
Max Chainring Size—
UDH CompatibleYes
Includes CockpitNo
UCI Legal—
Geometry on BikeInsights
Stack : Reach1.51
2026 Base
480510540560580610

Included Components

TanTan GR257
Frame
1,257g
GR257 Fork
Fork
478g
GR257 Seatpost
Seatpost
163g
HB047 Handlebar
Handlebar
366g
Total Weight2,264g

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