Please bare with me - WTH are these for?
 

Just upgraded to a 2024 SL8 Roubaix. Has the typical two bottle cage mounts, and a 3rd under the down tube. Seen that all before, no issues.

NOW. It also has two screws on the top of the top tube. I've never seen anything that could go there, not that I've seen it all, I'm sure. I bottle cage wouldn't work, the bottle would be blocked by the head set. Not a top tube bag guy, but I've seen those and the ones I've seen strap onto the frame, not bolt. I saw the Apple Airtag holders that bolt on, but I'm not an apple guy, plus being so obvious would kind of defeat the purpose, no? Does anyone have a use for these? I'm I just missing something obvious?

Top tube bag mount: https://bikepacking.com/index/top-tube-bags/

Ain't no way that I'm baring with you, but those are for a bolt on top tube bag.

Thank you, I've never seen bolt on bags, but like I said, I'm not a top tube bag guy so I wasn't looking hard. Even that link you provided, it looked like 99% were straps.

OK, call me an idiot, but thanks for the answer ;)

Extra mounting points for more options! That's great.

Anything other than a top tube bag you can think of that could go there?

My Checkpoint has the same. Still plugged after 2 years.

I've never seen anything besides a bolt-on top tube bag being used, but I guess you could mount a rear racing bottle cage if you really wanted.

I have an XLab Pocket 200 on my Checkpoint. It's super handy. Like below (not my bike).

https://cimg6.ibsrv.net/gimg/bikefor...398f5dcb07.jpg

The Revelate MagTank 2000 is a bolt on top tube bag. My Cannondale Topstone came with TT bolts, the Revelate is wonderful. It never flops to one side, is tapered near the back so your knees don’t hit it and it has a really terrific clasp to keep it shut, it was worth the $60. I love TT bags.

I'm sure this is an industry-standard set of mounting bolts/distance, right?. Look for phone case holders soon :-) Or why not other accessory holders -- minipump bracket, umbrella case, BT speaker, Kryptolock holder, windvane etc?

I have seen top tube mounts refer to as bento box mounts, but since I barely have the skills to take a sip from my down tube bottle while riding -- forget it if it is the seat tube bottle -- I giggle uncontrollably when I imagine myself eating a real Japanese multi-course, dual-level bento box lunch while riding. I would probably crash and impale myself with a chopstick.

I mounted my mini bike pump on my top tube.

https://cimg7.ibsrv.net/gimg/bikefor...d46e05256.jpeg

for the occasional black bear or when the beavers are not so little on the little beaver creek trail

I laughed, but that's not so far off of what you might find in a triangle shaped frame bag around here.

At least this solves the problem of not having enough room on the handlebar to mount lights. Bonus points for connecting this to the Di2 blips.

I only bare with my wife. Good day, sir.