I dont think so, the 570 has almost as much horsepower as the 800. I have had my 570 up to about 10000 feet with no issues, plenty of power.

 

570 will do just fine in Colorado...that guy is smoking something

 

Well, we are in Colorado! :smokin:

Seriously though, I live at over 9000 feet and nearly all of my riding is well above that. I have had my 570 over 12000 feet several times and it runs just fine (Tincup Pass, Cumberland Pass, Hancock Pass, Webster Pass, etc, etc.).

It is all about the torque on those kind of trails anyway and the 570 has plenty of torque.

Top speed might be the one area that the 570 is wanting (even though it will still hit over 50). If I really want to go fast, I will just hop on my Renegade 800 or KFX 400.

Let me put it another way - every time I get in my 570 I just smile.

 

I have been over 8000 feet and never noticed a power issue. THe machine could use more ground clearance though. THe mountin goat trails I rode had lots of large rocks and I didnt care for the smashing around the underneath. I am going to buy a proper skid plate for mine.

 

Also should mention the 570 will go and go and go on a tank of fuel, whereas the 900 drinks its gas like an alcoholic in a brewery.

 

Wassup neighbor!

EIF sure does wonder for these machines, I would have kept my Kawasaki Brute Force if it wasn't carb'd...seems no matter what jets and shims I installed it was either good at 9000 or good at 12,000 but never good at both

 

Wassup neighbor!

EFI sure does wonder for these machines, I would have kept my Kawasaki Brute Force if it wasn't carb'd...seems no matter what jets and shims I installed it was either good at 9000 or good at 12,000 but never good at both

Agree; we had a '06 Hawkeye that ran fine at 8K, 10K would't go over 15MPH...

 

thanks for all the reply's. I kind of thought he was full of it at the time. I only got to test ride a 570 at the local dealer one time and I thought it would be fine for what I wanted to do with it, but after what he said I started wondering. So unless I find a really good deal on an 800 I will probably buy a 570.

 

I would take a 570 over an 800 any day. Fuel mileage, ease of service and engine noise are three excellent reasons. People think the 570 is a kids toy until they find out they cant keep up with you anywhere, as you still have over 1/2 tank of gas when they are on fumes.

 

I am only interested in trail riding with the wife, Louisiana, Arkansas, Colorado, and maybe some Utah. Speed never was an issue. Power to pull at 12,000 feet or less riding two up with gear was my only concern. I don't really want to carry extra fuel either. It appears the 570 will do all I want to do. Thanks.

 

Yup the 570 prostar was built to replace the old Fuji 800
Way better tech in the 570

 

Look up atvtv.com's videos. He puts 1000's of miles a year on the Paiute trail and he says the 570 is a lot better than the old 800. He also has videos on the new 900. I have emailed him in the past with questions and he replied promptly. I'm sure he wouldn't mind giving you an honest opinion

 

Yes, I've rode my 570 to 11,000 feet in the Uintas and the Tushars with no problems, two people and my regular load.

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For sure, he must have been smoking some of that Colorado hemp...

I live at 4500 feet, so my dealer put the high altitude weights in my 570 before I even picked it up. Since most of my riding is between @4500 and @ 9000 feet, those weights worked great for about a year... However, over time, as the machine broke in and started developing more HP, I found myself hitting the REV limiter (7750 RPM) instead of the speed limiter (58 MPH). At that point, I replaced the high altitude weights with the stock weights. That fixed the issue of hitting the Rev limiter, and restored my top end speed.

I rode over 11,000 a few weeks ago, and noticed that I was struggling to hit 45MPH on the up-hill roads. That's the ONLY time I have had trouble at altitude, and that is (I am sure) due to the fact that I am no longer running the high altitude weights.

Having said all that; if you're riding at or above 10,000 feet regularly, you will most certainly NEED the high altitude weights! I wish that Popo made an in-between weight for the 570. Somewhere between high altitude and stock would be the sweet spot for me. I do realize there are aftermarket options, but I'm not willing to drop more than $30 on a set of weights.

 

So take a scale and grind the heavy ones down some. There are experts here that can help.

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Yeah, I used to do that many years ago when I was into 'tuning' my sleds. I have the precision digital scale and everything I'd need. It's just a bit of a pain, and a lot of guess-work to get it right.

 

Most of my riding would be at less than 1000 feet so I don't think I would need to add the weights, whatever that is......LOL. I am assuming they go in the clutch assembly. Since I never went over 25 mph up in the mountains I don't think it would be a problem either. Y'all would know better than me about that.

 

I guess I'm not following... I thought you rode on CO, but I don't think there's anywhere in CO that's at 1000 feet.

Anyway - at 1000 feet, the 570 would have a LOT of power, and be loads of fun to drive!!!

 

He also mentioned Louisiana... Most of that state is either a few feet above or a few feet below sea level. If you added all the hills there together, you might get to 1000 feet... ?

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Got it... and thanks for the detailed explanation!

High altitude certainly robs power from an engine, but fuel injection goes a long way toward making everything run as well as possible. In fact; having fuel injection would allow you to ride in LA and CO without having to re-jet your machine when you go between places.

You are never going to get the power of a 900 or 1000 out of a lowly 570, but saying the 570 is under-powered in the mountains ridiculous! There are plenty of Utah riders on this 570 forum who ride at high altitude without any complaints. Coming from LA, you will most likely notice at least some difference between riding at home and riding in the mountains, but you'll be having so much fun you probably won't care.

 

If money is not a consideration the 900 Trail is a heck of a machine. Lots of power and that power is really smooth. The ride is also considerably better than you get with a 570 but I am not sure I understand why. That said, I have two 570's and they are a heck of a lot of fun and they go everywhere my friends 900's go and they never have to wait for me. Of course that has only been up to the relatively low elevation of 9000'.

 

so power wise i would agree with everyone that the 570 is a great choice...especially since you arent planning on duning or doing a bunch of top speed runs everywhere you go.

but...anyone who says they didnt notice a power loss riding in co in any rzr either 1. never drove it at a low elevation, or 2. spent all of their time at low speeds. no two ways about it, you will lose a significant amount of hp when you go from sea level to 5500' (co foothills)...and it just gets worse when you ride up in the mountains (9000-11000' or more).

hp Loss = (elevation x 0.03 x horsepower @ sea level)/1000

while the fi can adjust, it is still working with less air so it isnt like it is maintaining the hp, just the driveability. a clutch kit will help you get the motor operating/shifting in the right rpm range, but you are still doing it with less hp.

so while the 570 would be a great choice for power and fuel mileage, also consider the suspension. we have alot of those hard things laying around (rocks), and the 570 suspension is pretty basic. and being narrow is nice, but can also be tippy when climbing over those aforementioned rocks. a day of getting your guts bounced around will make you think about long arms and shock/spring upgrades

just some thoughts

 

That is kind of what I figured as even my Harley shows a slight drop of power. Like I said I don't ride fast so the speed is not a consideration, but money is being retired as I am and the wife plans to retire next year too. Thus all the toys for our second childhood.

Thanks for all the replies.
Bill

 

I have a highlifter lifted, Alba racing Programmer, 1.75" wheel spacers on all corners, 27" roctanes and bandit shocks and no sway bars attached on my 2012 570 (that is larger than most 900s)...it is a Billy goat... Set it up for my kids and it goes anywhere. Had it in the mountains in CO (Taylor park) at around 14k asl with my 10 yr old driving up backside of Cumberland pass...no problem! Never had a power issue following my XP 4 1000. I love the 570!

 

I rode a 2020 570 rental, no power steering and it did amazing in all of the tallest mountains in Colorado. I actually started off with an older 300 which did amazing besides had little power which struggled on trails and eventually broke the axle and welds for the left tire lol.. so yes a 570 is perfect for trail riding.