Reviews & Ratings
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)
- Large tyre clearance: 45 mm tyres leave lots of room to go bigger.
more pros in the review
Cons
- XXL/61 cm is now offered, but under the Meiner brand with a different seat clamp, and its 396 mm reach is short for riders 199 cm and taller.
- Storage box uses older style cover that may be problematic
- Claimed frame weight of 1,259 g is heavy.
Key Points
- Carbon gravel frame
- Max tire clearance 700x57c
- UDH hanger
more key points in the review
Where to Buy

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