I've been searching for the #1 suggestion, it seems like that video is a rare gem where you can't find the full-length video. I have no luck in obtaining a copy of it. However, #3 make up for it, that's super hot and exactly what I'm looking for, thank you!

For  "Pulling Out is for Porn 2 - Nut In My Butt", the last scene from the torrent at 01:22:00, the top cum inside while DP gets me everytime (I made another thread just for asking for such scene  ;D). I have no idea how you came across this video, but well done!

Thanks for all the great suggestion Annlon!

Thanks for your answers. I admit, it is an interesting request, rather specific; while there is no shortage of fuck train scenes, you only need those where sex results in cumming, which crosses out all condom scenes and a large portion of bareback ones where the train is followed by other position before ejaculation. It was a joy to look into something this specific.

Bad news first: there used to be some studios with decent videos of this variety, specifically, "thenextdoorgays", "sebastiansstudios" and "joesroom". If you google those adding "fuck train" you will see they had some good examples. Sadly, these are defunct now, and it is hard to research and look for their videos. But in the spirit of full disclosure, I thought you may want to know they existed.

The good news is, even with that loss, there are some options for you to explore. I did try to identify those with cumming inside element (your HUGE bonus factor) where possible, starting with twinks:

There is a studio called " Jason Sparks Live", they filmed a reasonable amount of threesomes, and 3 scenes, in particular, have fuck train with cumming inside (double, even) that you may enjoy. These are:

1. Max, Travis and Marcus BAREBACK in Tulsa
   This one is one of the old ones, I could not find it on tube sites or here. Maybe you will have better luck, and you can watch a preview (with double cumshot) here:
   https://www.bestmalevideos.com/videos/blond-guy-in-the-middle-of-a-threeway-fucks-_-gets-fucked-111253.html

2. Damon, Zach & Trent BAREBACK in Fort Wayne
   This one is least impressive of the three, middle guy pulls out to cum on bottoms back:
   https://www.freeonlinegayporno.com/videos/69478/damon-zach-trent-bareback-in-fort-wayne/

3. Cody, Marcus & Max BAREBACK in Oklahoma City
   This one combines the best of the previous two: you can see it in full easily, and it has a double cumshot:
   https://www.xvideos.com/video31121331/cody_marcus_and_max_bareback_in_oklahoma_city

If you want to download them, 2 and 3 can be found in this collection:
https://www.gaytor.rent/details.php?id=deaec87a65ce37e32dd2e93f5781fde22162cba408a32618

In the same theme, SeanCody did a scene:
https://www.gaytor.rent/details.php?id=fddf239b40755f9f2dd2e93f5781fde2dd047d2459955bb7
This one is somewhat old (look at Lance there, all young and twinky), but it ends with a fuck train. The difference with it is that here it is not the top, but rather the bottom who cums from being fucked while riding a train if it is something you want to see. They also wear condoms. Then they break up the train and finish the scene with facials. See the scene here:
https://www.vporn.com/compilation/curtis-lance-and-calvin-have-hot-gay-sex/1807824/

I would imagine SeanCody might have done more in this style, but your cumming requirement is specific, and it would take some time to look through their archive, so it could be something you may wish to explore at your leisure if it strikes your fancy.

Continuing the twink theme, there is a film "Pulling Out is for Porn 2 - Nut In My Butt", and the second scene of it has fuck train with cumming inside followed by fingering of cummy holes. Not exactly what you were after, but cumshot is still there, and one could argue fingering only makes it all hotter. See the full scene here:
https://www.pornhub.com/view_video.php?viewkey=1302257772
And torrent for the film is here:
https://www.gaytor.rent/details.php?id=754e3e7889f9f18e2dd2e93f5781fde25b8a8e91cefa1d20

Concluding the "fuck train twinks" parade, HelixStudios did a "Breathe" film with a nice fuck train scene in the end, here:
https://www.gaytor.rent/details.php?id=44b5595295a6ac7a2dd2e93f5781fde25f3ecc908da0c231
It seems to have cumshots inside and a rather long fuck train to boot but, unfortunately, I could not find a tube version of it to check if it is all that it promises to be, so you may want to be careful with this one.

Now, I realize that you may be telling yourself "But these are all twinks/jocks!" after looking through these, and I agree, for some reason, most of the search results for me came up with twinks doing this, I am not sure why. I do hope it is not a problem for you (both your pictures have hunks, after all), but the list does go on a bit further than just twinks.

Throwing some Latinos into the mix, here is a scene:
https://www.xvideos.com/video914257/bareback_latino_threesome._marcelo_arno_and_rodrigo.
This one has Latinos and ends with a fuck train, but they do pull out before cumming. Torrent for it here:
https://www.gaytor.rent/details.php?id=62a5919a4d68f71b2dd2e93f5781fde247a48c61c528c543

Finally focusing on hunks, back in the day Jeff Palmer made a film "Barebacking with JEFF PALMER", and in the first part there is a scene with a fuck train on a pool table you may enjoy:
https://xhamster.com/videos/hot-threesome-on-pool-table-6286557
It has a fuck train in two positions even, vertical and horizontal, with some cumming inside too, among other things. Torrent here:
https://www.gaytor.rent/details.php?id=3b52f4a0886ec0a12dd2e93f5781fde29ea7eb8bed7032cb

For now, this is it in a nutshell, but there is one more scene that I have not yet managed to identify. Pornhub has this bit:
https://www.pornhub.com/view_video.php?viewkey=ph5c2e3a6e208fa
I do not know the scene, but details suggest one of the participants (main top) is Austin Shadow, and he does look like it. It also seems that this bit is from the same film:
https://www.pornhub.com/view_video.php?viewkey=ph5c06bbb6b0091
So far, however, I have been unable to identify where this scene comes from. If you would so wish, this may be something to look into. But as you will see in the scene, it does not show the actual cumshot, only the "aftermath" of it.

Have a look through those and see if any of these are any good for you.

Take care.

is the number of men important to you?

The Eromaxx one is crazy! Although I prefer 3-4 guys max,but I'll take whatever there is. If the number is higher than that it'll usually shifts away my focus and usually the fucking is not passionate as 3 guys. 

how important is the position or angle for you?

Any angle will do just fine, even with the position that the center guy lay down on bed, then the top penetrate him, while the third guy is sitting on top of him. Like the one in the attached image below.

Thanks for suggestion!

https://www.gaytor.rent/details.php?id=e49416e803a1ff9d2dd2e93f5781fde2da874ae81859761e
or just to see it:
https://www.redtube.com/579315

There they do not exactly cum during the train ride, but immediately after, see if something like this is still good for you.

As for other scenes, I do have a couple of questions for future thinking along these lines if you don't mind:

Firstly, as I understand, it is critical for you that men, preferable tops, would cum while riding the fuck train, but how important is the position or angle for you? For example, like in the video I sent you, the train is vertical with men standing, while in your picture they lie down with dicks exposed this way. Is this detail important, do you only search for fuck trains that are in a horizontal position filmed from this angle, or is the position not a factor for you so long as it is the fuck train activity?

Secondly, is the number of men important to you? The minimum for fuck train is three men, as in your picture, but as far as the maximum number of participants is concerned, the sky's the limit, Imean, look at what Eromaxx did:

https://www.gaytor.rent/details.php?id=139bdc6984c815095b532debabb9836836815a5855bfb3e5

Are you only looking for threesomes or you would not mind if it is a group/orgy scene as well?

If you could answer those, that could narrow it down, so we would not advise you something that, shall we say, you couldn't enjoy to the fullest capacity.

Take care.