I had my mind set on the Veloaero Grav then this came out. A bit shorter reach could suit me.
Anyone else who pulled the trigger?
https://tantanbikes.com/2026-Carbon-Gravel-Disc-Bike-Frame-CR257-Max-Tire-700X57C-UDH-hanger-Available-Size-485154565861cm-p7046486.html
It's basically the same frame as the Mondince FM346 (https://www.mondincecycle.com/product/latest-design-57mm-max-tire-with-chainstay-and-downtube-protector-carbon-gravel-bike-frame--fm346) (except for the seat tube shape/profile, but the geo chart is the same), discussed in this topic: https://chinertown.com/index.php/topic,7193.0.html (https://chinertown.com/index.php/topic,7193.0.html)
This TanTan frame was also mentioned here: https://chinertown.com/index.php/topic,7298.0.html (https://chinertown.com/index.php/topic,7298.0.html)
Looks like they don't make 61, same as mondince
it's a pitty, I liked geometry of 61mm better
Quote from: RiP on June 16, 2026, 05:14:33 AM
It's basically the same frame as the Mondince FM346 (https://www.mondincecycle.com/product/latest-design-57mm-max-tire-with-chainstay-and-downtube-protector-carbon-gravel-bike-frame--fm346) (except for the seat tube shape/profile, but the geo chart is the same), discussed in this topic: https://chinertown.com/index.php/topic,7193.0.html (https://chinertown.com/index.php/topic,7193.0.html)
This TanTan frame was also mentioned here: https://chinertown.com/index.php/topic,7298.0.html (https://chinertown.com/index.php/topic,7298.0.html)
I think it looks identical, maybe the profile looks different just from the photo?
Top tube / Seat tube junction is different. Tan Tan appears to use a wedge whereas Mondince might clamp from the back as it looks like the seatpost sits further forward from the back end of the top tube.
Quote from: glos_ludu on June 17, 2026, 02:55:58 AM
it's a pitty, I liked geometry of 61mm better
I asked them and they told me the 61cm is likely months away. I ordered the Velobuild instead. Maybe I'll try this frame as well when 61 is available.
Quote from: Eisenhut on June 21, 2026, 03:34:02 PM
I asked them and they told me the 61cm is likely months away. I ordered the Velobuild instead. Maybe I'll try this frame as well when 61 is available.
They will probably never make one. I've had a couple of instances when the geo chart was showing xl/xxl chart but when I asked about it it was always "coming some time in the future" and it never did. If they don't have the mold now, they most likely never will.
I really like this frame but have to look for something else and unfortunately there's not a lot of choices in my size.
It looks like the storage box is the older style used on mondince 326. It seemed like it could be problematic opposed to the newer style that uses the magnets...
Tan Tan just released a video with complete bike build using this frame
https://www.instagram.com/reel/DbDQaksBBqV/?igsh=Z3piM2hqd3k0cXFo
Quote from: AngryBear on June 22, 2026, 12:38:34 PM
It looks like the storage box is the older style used on mondince 326. It seemed like it could be problematic opposed to the newer style that uses the magnets...
What could be the problem with this kind of storage cover?
Quote from: ains on July 23, 2026, 04:32:05 AM
Tan Tan just released a video with complete bike build using this frame
https://www.instagram.com/reel/DbDQaksBBqV/?igsh=Z3piM2hqd3k0cXFo
They are also selling it on their website now with the setup posted on Insta for 1999$ on their site🫨 great value. https://tantanbikes.com/Single-Speed-1x12S-Shimano-GRX820-Mechanical-Groupset-Disc-Gravel-Bike-GR257-Complete-Bike-Carbon-wheelset-With-29225-Tire-p7137968.html
I just pulled the trigger on a GR257. Having them build it with a di2 groupset, custom paint, no wheels (will use Elite wheelset), custom paint.
Will let you know how it all goes.
Quote from: pavlo.k on June 16, 2026, 09:52:13 AM
Looks like they don't make 61, same as mondince
size 61(XXL) is now offered by meiner https://pl.aliexpress.com/item/1005012861779650.html
It has a slightly different seat clamp design
1259g announced seems heavy though...
Quote from: pavlo.k on August 26, 2026, 04:14:24 AM
size 61(XXL) is now offered by meiner https://pl.aliexpress.com/item/1005012861779650.html
It has a slightly different seat clamp design
I like the fact that they state XXL is for 199cm and taller. With a reach of 396...
Just received photos of the painted bike with the grx717 groupset. Wheels I ordered separately through Elite. The wheels shown here are just for for photos. Colors are burgundy faded into slate.
Just received and assembled my GR 257. Pictured here with 45mm tires, clearly has a lot of room to go even bigger.
I bought without wheels and assembled with some Elite Wheels I bought on AliExpress.
I also paid the $30 assembly fee for them to put on the GRX 717 groupset I bought from them. I figured even if there were issues, $30 to have the run the brake cables through the cockpit was worth it. But overall I was very impressed with their groupset assembly. Only issue after inspection was the headset needed some grease.
Very happy with the bike overall.