Hello kids,
I am thinking about buying a "roll bar" thing for my C-Force 400.
I'm 65 years old and I intend to use it in challenging terrain.
The interweb search turned up 2 units in New Zealand and 1 in Australia.
I didn't see any from USA or Europe.
I am thinking about this one at https://www.quadguard.co.nz/
It costs about $750 give or take currency and shipping Can't say
It's flexible shape is supposed to wrap around your body until the ATV weight is supported elsewhere.
It is basically 1 piece of urethane or other rubber compound that springs back to shape, or almost back to shape.
They say to replace it if it is badly damaged in use.
So the potential is there to be out another $750, and another, and so on.
There is a less rigid, more effective version costing $1500.
That one seems to be fully resistant to damage and has adjustable tension, and replaceable covers.
The Australian model is made of steel tubes and I think it might break some sensitive  parts but the transition is smooth so far.     
Your experience & advice is welcome, can't promise to follow it.                                                                                                                                                                                           

[2015 Z Force 800 53/Trail EPS]

Being 66 myself I have to say if I were still on an ATV my sense's wouldn't allow me to be riding in conditions that would roll it..as our bones won't take what they once did..with or without a roll bar. That's why I went to a SxS with a full roll cage and 4-point harness to keep my old-azz bones in side the safe-zone if there were an issue. Still..I don't take chances..especially when the wife is along. JMO.

Being 66 myself I have to say if I were still on an ATV my sense's wouldn't allow me to be riding in conditions that would roll it..as our bones won't take what they once did..with or without a roll bar. That's why I went to a SxS with a full roll cage and 4-point harness to keep my old-azz bones in side the safe-zone if there were an issue. Still..I don't take chances..especially when the wife is along. JMO.

In general, I agree.  If you ride an open ATV like you are a young idiot, and now are an "old idiot", take notice of the passing of time.

Older folks ca get hurt too easily And THEN, it takes forever to heal if ever.  There is a ATV rental place here that has 8-10 2021 CF 600 Tours.  Those poor machines are all beat up, fenders cracked, seats squashed, bent bumpers, cracked headlights, hit trees and rolled a few times.  I'd hate to have been the one in either pilot or rider when all of XYZ-excitement happened. 

Perhaps you need to "adjust" what you expect to do and how to do it? 

JMO   
YMMV

Thanks for the advice.
The interview/endorsement for the ROPS is a farmer type of guy who didn't deliberately take chances.
Are there any Made In USA or other ATV ROPS options?
I was googling rollovers because I want to know what angle it could be parked at without rolling.
A video said an ATV with a rider is a stable as a double decker bus.
I bet it's because a newer rider expects the ATV to keep themselves upright, not the opposite.

Here in Aussie the 'do gooders' have convinced the government to bring in a law stating that ALL new quads sold here have to have a ROPS. This has led to all the Japanese manufacturers stopping selling quads in aus, and only CFMOTO and Canned Ham are fitting the ROPS and selling any. Much to and fro has gone on but it is now law. Most are sold with the simple tube that bolts to the rear rack and towbar like these.
https://quadbar.com/
Bit on rule changes.
https://www.abc.net.au/news/rural/2021-10-11/atv-rule-change-quad-bikes-roll-over/100524050
They give the operator a bit of room to crawl out from underneath.
The flexable types are designed to do the same but will bounce back into shape after a rollover.
The best safety system is get some training and use your brain to think about what might happen if I go up/down that gully. Buy what ever you feel most comfortable with and watchout for trees.
I used quads on our farm for over 20 years before retiring and tipped them over a couple of times from trying to do too much for what they were not designed to do, so my own fault. I was able to roll away with no more than a few scratches. Most riders don't lean when going around a corner (like a two wheeled bike) and just sit upright without moving their weight to counterbalance the forces. This riding style is just asking for a rollover.
Im waiting for the day when ROPS are made mandatory for horses as most of my farm injuries have been from the back of a four legged animal, not four wheeled vehicle.

This story is famous to people my age in the USA, about an actor who was paralyzed by falling off a horse.
https://www.christopherreeve.org/blog/daily-dose/a-single-centimeter-a-ruined-life-the-accident-that-caused-christopher-reeve-superman-to-go-from-a-star-to-legend
I don't think a ROPS is right for horses or bikers.  When I had my road bike I thought of having an air bag system like the one that the mars rover used to bounce its way to a safe landing.  But it was strictly fantasy for me.
I've been to my hill since starting this thread and for the first time I was thinking about the consequences of hitting my head on a rock while climbing the hill on foot.  No, before you ask, I don't want the government to make wear a helmet while walking up a hill.
What are they putting on the CFMoto ATVs?  I think the urethane arch is the best looking and seems easy to mount.  It bolts to the rear rack, though, and I'm not sure my stock rack will take the stresses.  It is rated for (pausing to look it up) 88 pounds.

I was in a CFMoto dealer last week and they all had the Quadbar on them, dealer fitted.

https://quadbar.com/

As of yesterday, I think, the web showed me the specs & prices in the table below.
When I first found the quadbar or one like it, it was 2 bars and no spring IIRC.
I think now is a good time to get one, before I start my season.
But then I have to decide which one.  The quadbar wins on price & maybe ease of repair.  The airbag thing is definitely out, might go off during winching or something.  The urethane hoop might help if I got hit from behind like an accident I saw recently on Animal Planet Northwoods Law.  I didn't get to see how severe the guy's injuries were because I had to go to work, but he was sitting still in the middle of a road when a side by side hit his right flank.
Meanwhile gas (aka petrol) has been going up daily.  Prices and exchange rates are likely to change quickly too.

FYI I ordered one of the Quadguard urethane hoop type that mounts on the rear rack.  It's in the mail.  The price came out about $730 US including shipping.
After watching a bunch of youtube videos of the ATV-fail variety, I decided that the flagpole type might impale me during a forward roll-over.  I looked for a decent video cut from Starship Troopers to illustrate the unwanted circumstances but I am tired and I just gave up.  The point is that I personally would rather spend the extra $100 and have less risk.
I'll let you know how it looks when I get the chance.
Also what it weighs etc. since I don't know that yet.

Nothing installed yet on my ATV. The extra time gave me a chance to think on this a bit.
The topic might have been better as "ATV crush protection" but I didn't know the term when I started.
I think there's another design that nobody made yet.  That would be a rack bag with its sides made of inflatable air mattress stuff.  I mean like the old boy scout sleeping bag type that had long tubes of heavy duty rubber boat material. With the rack bag empty or filled with soft stuff it could cushion the rider if they were trapped under the ATV, or allow it to keep rolling past the flat upside down point.
That's the whole of my thoughts at the moment.
Edit 11/2022: Crush protection installed thread at
https://cfmoto-forum.com/400450-17/quadguard-crush-protection-installed/msg44838/#msg44838
Brief comments:  I used the 400 to tow a toy-ish wagon halfway up my hill carrying supplies to make a narrow trail/path.
Without room to turn the ATV around I backed down (without the wagon) each time, several times.
The Quadguard does block the view a little but not a lot and I could lean one way or the other to see around it.
I think I had my left hand on the rear rack most of the time and my right hand on the throttle-brake for good steady steering.
It didn't affect performance as far as I recall.