YAMAHA YZ250 2 STROKE REVIEW & why it may be better than a KTM or 4 stroke.
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- Опубліковано 10 вер 2024
- Suspension settings for the 2015 to 2020... No matter what springs are used this is a good place to start on the settings...
Rear shock
High Speed Comp - 1 full turn out from all the way in.
Low Speed Comp - 10 click out from all the way in
Rebound - 5 clicks out from all the way in
Rider Sag - 98 to 100mm
Front forks
Rebound - 10 clicks out from all the way in
Compression - 11 clicks out from all the way in
Fork height in clamps - 7mm
Fork oil amount - 332cc
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Thanks for watching!
upallnight91@hotmail.com
Sign the RM250 petition www.change.org...
Nobody talks about yz250 like you, and me
I’m subscribed
Still loving mine!
First time commenting on a UA-cam video. The level and quality of detail you get into is impressive. This is what hardcore riders want. Liked and subscribed.
40 y/o just picked up a 2015, haven’t been on the dirt forever. YZ is a blast
57 and just got a new 250X! Ride on.....
47 and just bought a 2013, it’s been a long time.
Love the retro look! I love riding and racing my 01 cr250 but I want a New 2 stroke. Everyone wants me on the ktm train but The yamaha is what I am interested in.
Yamaha parts are easyer to get.
Very few people can / could punish a bike like Ricky Carmichael so, yeah, a steel frame might stretch. For the rest of us, steel is great. My 2003 YZ250 has not stretched, and, yes, I did measure it.
Just bought a 2020 yz250 thank you for this video!
Sweet bikes, I love the bonus snippet of the 1 2 5. There's just something about a tiny bore that punches like a hammer
I primarily work on Japanese bikes in my shop. We used to work on KTMs but it got to the point that everyone that came in never got fixed because the part were high AF and aftermarket parts were not to be found. Just rather work on Japanese bikes. And not being able to find engine cases is crazy. Even from KTM!! That right there would make me not want a KTM. If my cases get damaged...depending on the model I may be SOL.
I agree with you. The parts availability for KTMs is poor. I don't understand why some are willing to deal with that. For me being able to find the part I need when I need it is very important
If you are heavier, under 5'11" and need stiffer springs, this chassis is going to need some work. I just picked up the 2019 model, (same bike I think), and it is a lot taller than my last bike (97 KX250). I live in Michigan with mostly soft to intermediate terrain. The bike is un-ride-able for my 230lb 5'9" frame. After I get rid of the stock Dunlop MX52 tires and replace them with Dunlop MX33's, here is what i am doing for the rest of the bike to make the thing enjoyable to ride, (and much safer). Lowering the bike and making it handle better is the goal.
1) Bought the Pro Circuit rear suspension linkage pull rod. It is suppose to get the front end from wagging out of corners so much, and should lower the back fender about 5mm.
2) Stiffer springs for my weight. This will take the "free sag", (just the bike weight, no rider), from 15mm to about 35mm, for a 20mm lower fender.
3) "PR2 racing", out of Pennsylvania, sold me the springs fast, and will modify my sub frame to be adjustable. I expect anopther 5mm lower fender, approx.
4) Lower the seat one inch. 4 week wait for a complete lower seat, and it may not fit well. I found "JB Sport Trim" in Gowen Michigan. She will cut the foam of the stock seat and use the stock cover, (or what ever cover you want her to use). I am making a template for her, but I hear from a very good source that Nicole Guild, (owner) is amazing.
That will lower my bike by about 2" at the seat. If I need more PR2 also lowers suspension.
There is no reason to ride on top of a sky scrapper.
KYB out of the box stomps on the WP stuff.
Agreed...Air is to fly through, but when you hitting things, you need the springs
Right no air crap.
New to 2-strokes. Like your commentary. I owned more than one DRZ-400E/S/SM. I currently have a 2022 YZ125X and a 2021 YZ250FX. Being a casual rider, it’s all about fun. After getting the 125X, the 250FX (as good as it is) feels like a stuffed pig. 2-strokes all the way from here on out, and I’m turning 42 shortly. Ya only live once. Enjoy it.
Yes sir! My yz250 was down for the weekend so I took the yz450 out this weekend. I like to own two bikes so I never miss a ride when one is down. But more and more I'm thinking about selling the 450 and replacing that one with a smoker as well. At 45, like you it's all about having fun and I'm finding I have more fun on the smokers. And the lighter weight is easier on my body
Beautiful bike man!!!!🏁I’m 41 and still have my 1998 YZ125 I bought new. If your not a factory rider. All privateers should be racing 2-strokes!! We would take over.
bro this vid smoke all the others. i love my yz250 got the bossen reeds and full pro circuit.
Cleaning up the ports and casting goobers is a good thing to do. I am one of the few left who ports 2-stroke engines for a living, and all I would do to the later 2-strokes is a touch up here, a touch up there. One problem some engine builders have is thinking the manufacture got it wrong. In the old days, they often could be improved greatly, but even today there are little things you can do to get a power curve you like better for your riding. Changing a pipe will probably make more difference though, (and easier to switch back if you don't like it). You do a better vid than MXA man. Of course, they are not the mag they used to be, and can use a port job. :)
Thanks man!
Yeah I may get into the yz125 and do as you mentioned, just clean the ports up some
Really appreicate the quality content/commentary. I've been riding since 1969, was 4 stroke, 50s, 70s, 100s until 74 elsinore 125, then some 250s, in the early 2000's started riding Yamaha and aside from some street bikes and supermotos have always been WR, YZ. 426, 250f, until I figured out I could buy a fresh used yz 250 for the cost of rebuilding a blown up 250f, now since 2007 it's been YZ250s, 98% track riding 2% desert/trail. To your point I've run the Old Timer series here in the Reno Area and have been accused of running a big bore when it's just a stock motor with VForce and shorty silencer. I grew up on the East coast Southwick was a local track and the YZ really works well in the sand. The blue groove, clay conditions are the only place I would prefer a four stroke. 3 years ago I've commited to off road and found a 05 YZ250, It's been extremely humbling to learn how to ride off road/slow and technical but it works well cuz I just don't heal as quickly these days, so it's a good fit. The YZ has been transformed to an awesome offroad weapon with these additions> EG 300 jug, smart carb (we live at 6200' and ride anywhere from sea level to 10k) WR trans, 18'' rear, sss fork, resprung for my weight soft, enduro Engineering radiator guards and braces, running stock chamber and muffler with Fisch moto sparky insert, gripper seat (although I try to stand everywhere) Tusk hybird gummy rear, Golden Tyre front, Fat bars, Hinson clutch, ASV clutch lever, Cycra hand guards. Yeah I have to kick it but not a game changer. The majority of my ride partners are half my age and usually on Husky or KTM, but this set up works amazing, they don't wait for the YZ and my phone rings for the next ride... In short, I agree with you, the 2 strokes are cost effecitve, fun to ride, and agurably make a better rider! Love the channel keep it up!
Thanks! And thanks for sharing! I too have been mostly a track rider but in the past 4 years I have been doing some off road hare scrambles and its been fun. When I replace my 2021 YZ125 for the newer model for the track I might do what you did and convert or dedicate my 2021 YZ125 to a off road only bike (hare scrambles). Currently I own a YZ250 and a YZ125. The 125 does good in the tight woods we have here in florida. Especially towards the end of the race when fatigue starts to set in lol. Its strange but just 10 years ago only about 5% of the bikes at a local track was a smoker but today they have made a huge comeback and its more like 40% at the local tracks. I love this because for me nothing is funner and provides that dirt bike experience like a smoker does. Thanks for commenting and hope you have a great Christmas!
@@UpAllNight91 Happy Holidays to you too! We will have our kids in town and my son 28yrs and his friends and I will go hit the desert! this group are accomplished track riders recently spending more time on single track and desert. The conditions are all time right now and will be good for the next 5 days... pure bliss! Thanks again for your commitment to the channel, it takes alot of effort to create at the level you are...well done!
@@bwcdesign Nice! Enjoy it! We went to a track yesterday that was closed down about a year ago but reopened 2 weeks ago. Was a great day with lots of friends. Living the dream!
KTM seems to have some "service" problems I see. I have a friend who picked up a new 4-stroke KTM and blew out the crank in 3 months. KTM helped a bit I understand, but it still cost some bucks of his to fix it. Getting the Yamaha this week.
I love 2 stoke...
I rode on 2019 yz250, and I have to say man. It was aaaalot better than I thought. It was so good I want one and is not wathcing this video. That being said. I have never had aaany problems with my 2019 sxf 350. It runs extremly well. I change oil every 5h, its always been in extremely good condition, almost nothing on the magnet or in the oil screen. Some run these engines to 200h without changing even anything. And when they do, everything is in good condition. My previus 2017 yz250f I changed the piston at 100h and the crank when right away. Full rebuild. The oil was always very dark, stuff on the magnet jada jada. Not saying yamma isnt good but the KTM I have to say seems to last very good. I ordered a bunch of random screws and stuff on KTM shop. No problems getting "regular" stuff.
I had an RM400.......INCREDIBLE
I have a 2019 yz250x its a great bike low maintenance and Japanese reliability !
The 96 restyle looks so fucking sick mate! Wicked bike!
I have a 2021 YZ250X, best bike in the world bar none. YZ 2 stroke FTW. Honda CR 2 strokes are a very close 2nd
I only ride Yamaha dirt bikes and love them.
Not brand loyal but holy cow thats all I have around me anymore is Yamahas. They make smokers, and thier 4 strokes hold up well. Best suspension great motors. No complaints
I’m a a Yamaha guy but KTM’s quality is good better then most brands I’ve used except yamaha had 4 KTM’s now 2 2014 250sx 2020 350sxf and a 2010 150sx and not a single one with issues changed piston in 150 and that’s it no broken cases etc only issue I had is with bearings for some reason they don’t like to last long on my 250sx model but I barley rode it but there are a lot more benefits with a ktm or husky then buying a Yamaha brand new they might be more expensive but they also include a hydraulic clutch, can a just power to your liking, better cooling, no vibration, air forks, brakes, the air box design. But buying older models like 06+ then YZ250 all the way until you spend the same amount to restore it I would just buy a 2017+ ktm
Dude I love the throwback graphics, I want a set. Where did you get them?
decallabs in europe. Email them and ask for all the different designs they have for your bike. Its in that list somewhere. Then you can customize it how you want from there.
Damn, such a good video!
Thanks for the review. Some good info here about head work. I'm diggin those graphics Where did you get those?
Thanks. The decals are from decallab www.decallab.eu . They have a few displayed on the web page but if you email and ask they will send you a email with every design they have for your bike (like over 100). Pick which one you want and then direct them what changes you wanna do to it, change colors or sponsers or whatever you wanna do. Only cost 135 bucks at my door even with all the custom work.
Nice shroud graphics!! They remind me of the 1996 graphics for the 125 & 250.
Thanks. That was the goal. A 1996 throw back. I even put white decals on the fenders to mimic the white fenders of the 1996 lol
👍 Bring back the 2 strokes
Grüße aus Deutschland
They are coming back!
Easily the best yz250 video I’ve ever seen. I miss my rm250 nothing beats the sound and feel. Ask yourself this: do fast riders look better on a 250 2 stroke? I think they do
Yz is better than ktm all day. It's like garage built cars/street cars compared to a supercars. Some people just pay money for what already has some stuff done to it performance wise. Usually buy a cargo van, ktm coffee mug, pull over and spike their hair in the front as well. 😂 yz for the win
Great video fella!, thank you
I have a 2001 yz250 two stroke with a bunch of parts of newer models I love it best bike ever
I got ktm now I want yam!
Good info here thanks 👍🏼
Oh yessss 🔥🔥🔥
You're so right on everything you said about the YZ, what to do & why..
Nailed it in those problems with the KTM's as well. Those aluminum shift drums are terrible.
Good video, I have yz125 and 250. Love them both but the 125 is my favorite
What is your reason for liking the 125 over the 250
I’m in the market for a bike and that’s a major question I have as to which one
Great video! Those points you mentioned aren’t things I’ve heard before, there are a lot of videos of people repeating the same stuff so this is cool.
Love the video exactly what i wanted to hear
Thanks! And thanks for watching!
Like the graphics 👍
Thank you for the video. It inspired me to continue my ways
Thats awesome. Happens to me too when I watch people's videos.
2021 with v force reeds, lectron carb, skid plate, full fmf exhaust, thing is amazing and the best bike I have ridden. I personally like it better then any of the new ktm 250s and 300s, after the upgrades ofcourse, oh and still cheaper
Great amount of information in this video. Excellent job, thank you.
4:05 is exactly the reason I went with a YZ over the SX or TC.
Good looking retro YZ brother!
Thanks!
Im yz fan no matter what
Awesome video mate!!! TOP STAFF!!! Could you do one for the yz 125 as well??
I appreciate all the info buddy good video
Your welcome, thanks for watching!
I have a 2021 yz250x with FMF gnarly pipe. I will NEVER own a 4 stroke again.
Your voice has not changed much over 11years
Thanks man, and thanks for catching the videos. I'l be working on some more here shortly.
very informative video. thank you
Well explained 👏
Good video. Safe riding my friend. I have an 06yz250
I've been tossing around the idea do I want a 450 or a 250 2 stroke, do I want a KTM or Yamaha do I want 300 2 T or 450 4T and I keep coming back to Yamahas 250 2T and you just reconfirmed why KTM is not such a good choice because i had a friend had a street KTM 790 Duke and he could not get parts on a 2 year old bike, KTM are built to the balls so when something goes wrong and it will and you need parts your fu*ked KTM don't give a damn about keeping parts stocked up on any of there bikes , so thanks for reconfirming my choice to get back to a 2 stroke motor and yes damn you Suzuki bring back the RM 250 2 stroke , I wish I would have never sold mine it was my first bike, lots of really good information on this review so thanks for all that ! Peace and happy safe riding !
Retro Graphics on a YZ250
250s are a beast
good video man killed that shi
told me what i neeed to kno and more
Beautiful build. Took me back instantly. Have you tried ktm Australia for your cases?
Its not a maybe, it is definitely is better.
I have a 06 yz250 with a lowering link (1.5 drop) i noticed the rear was a bit softer luckily it has a stiffer spring, will the bike still ride well if I lower the forks as well? Please and thank you.
I'm +65 vet novice 154lbs. So go to a 5.3 rear spring, 47 kg.front spring. 2010 cyl.head and a wise co piston. For my 2014 yz250. With 35 hours on bike since new. What ya think?
Sounds like a good set up. The 2010 head does require at least 1 gallon of 110 octane race fuel mixed with 2 gallons of 93 pump to keep pinging under control but that is the best OEM head yamahe ever put out on the YZ and its strong. Wiseco for safety, they wont break. At 154 pounds vet rider, a 5.2 to 5.3 in the rear and a 0.46 to 0.47 up front will be right on. if you like softer go with the softer of them, if you like firmer go with the firmer of them two mentioned
Congrats, amazing channel you've got. Can you give me your opinion. I casually raced 80s and 125s 20 years ago, got injured, and stopped riding. But.. I'm going to get a bike again and it will be blue. I want a YZ250, I'm just thinking it might be too powerful. I want a broader powerband than the CR125 I had all those years ago. How stupid would i be to start back on a bike, with a 250 smoker?
Thanks! Hmm. Well the good news is in stock form the YZ250 has been tamed down some in the recent years with a longer stock silencer and a lower compression head but its still a little rowdy lol. A 250f might be a good fit for you though, easy torque, decent HP, and great suspension. However there can be a chance you may want more power down the road, depending on your weight and how power robbing your riding areas are. Yamaha often offers test rides on their current bike lineups at certain events like hair scrambles and MX races, wouldnt hurt to contact Yamaha and find one of these events close to you so you cant test ride both and see which one you like.
Anyone who has owned a decent 2 stroke knows they can be set up for trail or track riding, and are half the cost to maintain, AND weigh what a dirt bike is supposed to.
Yamaha all the way!
My Yz250 211 lbs
2003 husaberg Fx650e 244 lbs
My friends
2019 Honda Crf450 247 lbs.
Are bikes getting heavier or is it just me.
For sure gotten heavier, however at the pro level they still get the weight down with titanium parts and stuff. It's just us normal people that ride the pigs.
I’m trying to get a two stroke for trail rideing how much would i get before a rebuild?
Not being able to get a case, (or set of cases), for a 2 year old KTM is terrible, (along with parts back order wait lists). Look at all the resources they have to spend on things like fuel injection. Could it be that the government EPA with their ever increasing emission regulation is forcing KTM to spend so much money appeasing the EPA, that they can't afford to do good business? You can bet the farm on it. Ayn Rand was correct.
My wife likes the smell of the 2 stroke more then the 4 stroke. Do you think a 927 2t cologne would get me more action in the sack? Im really good at straping down my bikes in the truck bed so i thought about bringing the bike tie down straps to the bedroom bed but im worried that could get me in trouble plus its fun time when you unstrap your bike however im not sure of the outcome of unstraping my wife. Both the bike and wife are loud, dangerous and some times protest thats for sure but i tend to watch more videos of me riding my bike and i never watch videos of me riding my wife . am i doing something wrong here?
lol
Did I spot a chow amazing dogs
LoL yes sir! Two Chows, and now a Rooster and 4 chickens lol.
@@UpAllNight91 I have 2 chows as well and just bought a 2016 YZ250
@@ZexzaHut nice! I love chows. Great dogs, getting harder to find but they are still out there! Congrats on the 2016!
Hey I have a cr125 from 2007. I need a new motocross bike bike soon I’m out growing my 125. I am looking for a yz250, is it a good bike for me? I race tracks.
Does a bear shit in the woods? Hell yea they good
@@stevestiffler9120 😄😄
I need your advice. Were I live my dealer doesn’t carry the YZ250X model. I want to do single track trail riding and some hard enduro. Is is a good idea to buy a YZ250 and do the mods to convert it into a YZ250X model? I would really appreciate your feedback!
Hello. Here in Florida we do FTR hare scrambles and most the guys who race a YZ250 usually choose the normal YZ250 and not the X. I'm really not sure why but that seems to be the trend. Unless you feel you need the 18 rear wheel, I too would get the YZ250 and not the X and just do whatever you need to make it good for your conditions. The stock suspension might start out a hair bit on the firm side but it does break in to be a little soft for a faster MX rider but should be spot on for off road riding.
@@UpAllNight91 Thank you so much! I understand the CDI, Head, Transmission (3&4 gears), suspension, rear wheel, and stand are different between the YZ250 and YA250X models. Do you still think that the YZ250 would do good in woods & hard enduro riding?
@@surfpr727 Well I havent rode one so its hard to say how it does. But I do know most woods racers start with the YZ250 model and do the mods they want on that. I kinda see the YZ250x bike as more of a trail cruiser and less of a trail racer. So depends on how you plan to use it I guess.
When your refer to top and bottom does that apply to low to high gears or power with in a gear ⚙️?
When I say bottom, I'm referring to low RPMs. Doesnt matter if its in 1st or 5th. And top end is RPMs as well, in any gear. Kinda like if you was watching a tachometer.
@@UpAllNight91 I always wondered what that meant; I prolly should've known by now 😅 😂
Thanks for schooling me
@@bunnyman6321 Any time!
You were talking about mixing race gas what about your oil gas ratio? Just curious what you run?
I'm currently running 5 ounces of oil per gallon. Thats like 25:1 or close to it. But I keep it revved out good and cleaned out. However on my wife's 125 I run her at 40:1 because she lugs it around more. 32:1 is a good middle ground though and can't go wrong with that
@@UpAllNight91 thanks! My last 125 I kept it reved out well but still around 50:1. I understand that proper jetting should be made not oil reduction. Just wanna get it all dialed in properly
You sound young and honestly you have a lot to learn
You obviously did not watch the whole clip or pay much attention because he said he was 43 years old.
Everything he said about the YZ250 is very credible. A very good and accurate sum up of the bike IMO.
I’m just a woods rider and like em pretty much stock, would buying a 2010 head for my 2013 YZ250 help in my type of riding? I’m thinking the bump in compression would give me a tad more low end? I would just keep the 2010 head stock in my case which is still a bump in compression. This way I could still run premium pump gas as well??
A 2010 head does surely increase the bottom end. Really the only difference between the two heads is the 2010 is milled down lower, bringing the squish closer to piston (tighter) and bumps the compression up. Unfortunately that 2010 head can ping a little when using straight pump gas. Its not to the level of damaging otherwise they wouldnt have sold the 2003 to 2010 with that head. But its surely on the very edge, needing fresh 93 octane at the very least. To get that higher compression head to actually be 100% happy even just one gallon of 110 leaded race fuel mixed with 4 gallons of 93 pump would be enough to soothe any mild pinging it might exhibit. It doesnt take much to make it happy. I remember Yamaha saying it needed 95 octane. So that seems about right to me
BTW in about a week I will be posting a video on how to rechamber the head with basic tools and time. Comes out great when finished. And cant tell the difference between a professional rechambered head and the ones I will be showing how to do from home
@@UpAllNight91 what I read was that Europes pump fuel wasn’t good enough for the older head and during the earlier years the Europe version always had the lower compression head, then in 2011 they made them both the same for simplicity of one bike for both countries. So like you said, our gas works but it’s right on the edge.
@@UpAllNight91 awesome
Bro. Do you have extra pipe? I will buy if you have, i need one..
It isnt better than an KTM or fourstroke it is quiet different.
Thumbs up for your retro style graphic, it is so nice :)
What kind if frame guards?
LiveFreeandShred acerbic x-grip
Where did you get the YZ old school plastics ?
Thanks. The decals are from decallab www.decallab.eu . They have a few displayed on the web page but if you email and ask they will send you a email with every design they have for your bike (like over 100). Pick which one you want and then direct them what changes you wanna do to it, change colors or sponsers or whatever you wanna do. Only cost 135 bucks at my door even with all the custom work.
Reminds me of my first PW 80
It's beautiful bike this is my dream but we are not rich to buy the bike😔😔
You mention they modified the cylinder head in 2011. I looked the parts catalogue and wonder why there is no difference in part number from 2003-2019? Seems to be all the same 🤔
I should had clarified, the Europe model always used the low compression head that the US model finally started using in 2011 as well. If you check american parts schematics it shows they changed the head in 2011 here in the states.
@@UpAllNight91 Ok thanks, it makes sense now. I looked at the Europe model only.
KTMs are made for factory professional Racers that can afford it replacing everything for every race or every other race Yamaha is the way to go whether you're buying 2-stroke or 4-stroke KTMs are for f****** yuppies
They gave the guy I bought my 2017 tc 250 new 2018 cases when the idler gear area broke on Kickstarter.
Looks like they fixed the problem.
KTM's are that bad, really? Sounds like some fanboyism.
IS this guy really speaking that KTM 2 stroke's are garbage? Or any KTM? KTM is top notch up to date with the most recent R&D. Cant knock a KTM my man.
It’s a good bike
I think he just like yz
Where did you get that decal kit made at??
I got 2010
Dealers can't get new ones today either and even riding gear is getting scarce. I found a slightly used one, (2019), and am picking it up this week. I am 56 and have not ridden for 17 years. Because our government direction is going to communism, (to destroy Trump and us), I decided I am going to enjoy my life as well as I can, while I can. Piss on em!!!!
They use chrome moly frames
A two stroke is always better a
than a four stroke. The rider just might not be...
Yamaha was and always will be better than KTM.
I have some questions
sure whatcha got?
So I have an 2002 ktm 125 which now it's a 200 2stroke. Looking to get a new bike now but keeping the 02..I love the YZ but the Ktm always feels slimmer when riding and it feels like I can really throw it around. Is there anyway you can make a YZ feel slimmer?
Great video though
And with my 200 2stroke I can beat my friends through the turns and almost down the straight.
@@sassafraswakeboyz4121 You figure it out yet?
Hey man
yes sir
Do you think a 13 year olds could ride this?
What bike to you have now
@@aidanmacdonald6602 I don't have one yet
Get a YZ 125, not new, I was riding 250 4strokes at that age, totally different technology to today’s 4t, but I when I went back to 2stroke, not soon enough for me same age I was on a 125, I had been riding since I was 5 and pretty good, you are not ready to ride a YZ250 2 stroke!
Don’t jump up to fast it will hold you back and you won’t develop key skills, if you ever learn to ride a 125 properly you will ride any bike properly!
@@alex-qs8ik if you never had a bike before a yz250 would kill you
Hahaha
Got cases nps iv got 2017,from ktm had weight 9 days thats in 2024,must be america dunno!im in Dundee ,Scotland.
Lucky you. We had to use 2018 cases and do a few other things to make the 18 cases work on the 17.
@@UpAllNight91 2018 cases fit 2017 i thot its same to 2019? Or 21. I got 2018 cases aswell!.they say there same.
@@UpAllNight91 what did you need to do?to the cases , they told me there the same and there on my bike and running?
@@dalekelly1037 they changed some things from 2017 to 2018. 2017 was breaking the cases around the kick starter. For me to get 2018 cases to work on the 2017 I had to convert to the 2018 kick mechanism and a few other little things that I can't remember
I got told the only dif is they beefed up the kickstart bit,from the 2017,thats how you cant get 2017 cases.but there the same i got told i cant see any dif and there on and running fine.