I’ve got the 135L. Used it only once so far to go to Wisconsin. Was able to fit my size Medium El Mariachi hardtail frame by sliding in the rear dropouts. The case is VERY well designed with lots of small thoughtful things. Like when you put the wheel into it’s spot, there’s a spot to hold the skewer/axle. My only complaint about the case is it really needed a handle at a low spot away from the wheels to lift it up by to pull it through an airport. They actually upgraded the current cases with that handle…
-Test fit of my medium Santa Cruz Tallboy should have it fit by removing a suspension bolt from the shock and letting it get more compact.
-135L barely can fit 700c wheels with 33cm cross tires.
-150L just got an update where it can fit slightly larger tires. Hopefully can fit my MTB tires…
My current plan is to keep the 135L for my girlfriend’s bike (she has a 27.5 wheel MTB) and get the 150L for myself when travelling with the MTB.
I used to use a cardboard box I had custom made that fit within airline sizes. Then the Ritchey Travel case. I used to remove the rear swingarm and put that in my carry-on but shouldn’t need to do that with this case.
One big tip I have is if your rear hub allows, remove the rear axle and the cassette. It’ll be much more compact. Take the axle and put it in the rear dropouts of your bike w/ the through axle. It’ll prevent crushing of the chain/seat stays.
Just in case, I take a few of the heavier components (pedals) in my carry-on just so I’m sure I’m not overweight. Do NOT take tools in your carry-on. Too many times TSA believes I’m going to hijack an airplane with my allen key.
Picture of my frame after tossing it in after Trek race: