Keywords: 29er,700c,bike of the month,flat mount bike,gravel ride


Andy Kessler - 24-May-2019
I have to make a confession: I have been working together with Gerard for 12 years now. 4 years while he was my boss at Cervélo and 8 years since we have started OPEN together. About 10 days ago I lied to him for the first time...not only to him but also to you.

Gerard had an email exchange with somebody that told him that the weight mentioned in the video of this months BOTM can not be right. He called me and said he is pretty sure that actually the customer is right and this build can not be below 7kg as I say in the video. I told him no, it is correct - but it is not! Very sorry for that missinformation.

We had a couple of builds around or below 7kg before based on the U.P. or U.P.P.E.R. but this one is definitely not. It is not even below 8kg it is 8.6kg without the pedals. I had no intention at all to have a super light bike here the only goal was to test the SRAM groupset.

No idea how the 7kg number came into my head the only thing I can think off is that it was very cold in the building where we did that photo-shooting as there was no heating and the temperature must have been around 7 degrees and my brain frozen...

Here are the rest of the specifications:

size L
frame NEW U.P. 
headset Cane Creek 40
fork OPEN U-Turn 
stem  ZIPP Service Course 110mm
handlebar ZIPP Service Course SL 440mm
handlebar grip ZIPP SERVICE COURSE
seatpost ENVE zero offset, 27.2mm, 400 black
saddle Fizik Tundra 2
brakes SRAM RED ETAP AXS D1, Rotor 160f/160r
chainrings SRAM 46/33
front and rear derailleur SRAM RED ETAP AXS D1
cassette SRAM XG 1290 D1, 10-33
chain SRAM RED D1
wheel DT SWISS ERC 1100 Dicut
tire COMPASS Barlow Pass 700x38 Extralight

Comments & Questions

Honesty is the best policy! Regardless you’ve got a great product and it’s super-flexible in terms of what can be built. I am sure if you wants to build a 7kg Bike with the frame you could do it!
Post #1 of 10. Posted by Michael Gormley on 24-May-2019 11:37:07 GMT in reply to blog [0<--18422]
Sir, you did not lie. You misspoke. Amazing bicycle build!
Post #2 of 10. Posted by JaBig on 24-May-2019 13:40:56 GMT in reply to blog [0<--18423]
per JaBig, i, too, believe you misspoke ... big difference between misspeaking and lying ...
Post #6 of 10. Posted by r f on 25-May-2019 21:36:22 GMT in reply to post #2 [18423<--18429]
I have an open up. New 1100 miles currently. I am on my 4th derailleur cable. My set up is Sram force 1x11. It appears the front wheel dumps all the dirt and mud into the cable cap on the bottom bracket.
I really want a consistent smooth shift. Any solution? Thanks for any help
Post #3 of 10. Posted by Scott Gould on 24-May-2019 20:29:48 GMT in reply to blog [0<--18424]
Definitely worthy of a good fix
Post #5 of 10. Posted by Scot Rosenthal on 25-May-2019 01:10:54 GMT in reply to post #3 [18424<--18426]
Hi Scott, very strange. Stupid question, but the cable guide is properly installed, there is no gap anywhere? Are you sure it's from mud coming off the front tire? I ride a lot in the rain (I'm in the Netherlands after all) but I don't have this issue and I've never heard it mentioned either. If you have any photos or anything, feel free to send it to
Post #8 of 10. Posted by Gerard Vroomen on 28-May-2019 15:36:27 GMT in reply to post #3 [18424<--18435]
I’m upgrading to the Shimano GRX Di2 group set on my OPEN UP. I have issues that dirt gets in the frame under the bottom bracket through the rubber clip with the two slots under the bottom bracket and makes shifting difficult because it gums up the cable. But I LOVE this bike!
Post #9 of 10. Posted by Ruth Sherman on 01-Feb-2020 20:54:50 GMT in reply to post #3 [18424<--20066]
Dear Ruth, we have a dedicated BB guide for that. Its really made out of rubber and closes the hole completely. You can find it on our webshop and its called Cable guide for ETAP (I know this might be a but misleading). Let me know if I can help you with anything else
Post #10 of 10. Posted by Andy Kessler on 03-Feb-2020 07:38:48 GMT in reply to post #9 [20066<--20070]
At least you confessed OPEN-ly ...??
Post #4 of 10. Posted by Kesh on 24-May-2019 23:10:49 GMT in reply to blog [0<--18425]
Great bike so who cares about a kilo here or there :)
Post #7 of 10. Posted by Sean Fitzgerald on 26-May-2019 19:18:31 GMT in reply to blog [0<--18431]