I own a few different water bottle cages, but for all of them my water bottle barely fits in my frame (the bottle hits the top tube and is hard to get out). Has anybody come across a water bottle cage that's designed for long water bottles?
Basically the part the bottle sits in would just have to be extra deep/recessed.

Just get a water bottle that will fit to your bike.

I don't use the specialty water bottles, but I go to the Asian market and buy the soft drinks in the bomb proof bottle and re use them at home. So I have a couple to take with me on a ride.

I've seen tall water bottles sold with a matching cage also.

There are side entry cages which might help. Dunno of any that extend further below the bolts than others, however.

Well, except for those 1-1.5 liter holders. their bottom looks to go a little lower. Not too well versed on those, though.

https://www.amazon.com/Topeak-Modula-.../dp/B000FIE51M

I use 1 Liter bottles and don't want to give them up (I run out of water all the time as it is). I also have a sloping top tube.


I didn't think of those. The one you linked looks like it might extend further down than a regular bottle. I'll take a look at one next time I'm in a bike shop.

plastic profile design bottle cages come with two sets of holes for multiple mounting heights, not sure if this solves the problem but it might get you another inch, which might be just enough... You can also move the bottle behind your seat with a mount similar to TT gear, but not nearly as expensive. Mine was about $20 from my LBS, so must be cheaper online, brand like XTAC or something like that, they are nice and allow for any bottle size, still sturdy with said profile design bottle cages.

One thing about those Topeak 1 L holders is that they don't seem like they'd be handy for drinking on the move with that top clamp deal.

I just remembered the Liquid Caddy. I've always wanted to try one out for my around-town bike. The $25 price tag has kept me away, however.

Also dunno if it's big enough for big bottles.

Two choices:
Modify the cage with an adapter:
https://www.amazon.com/Topeak-15-Wate...414211&sr=1-51

or a side entry cage:

https://www.amazon.com/Sunlite-Side-M...14349&sr=1-128