I'm going to show your video to the guys who think they have to change their piston after 50 hours when they don't even use 50% of their bike and they tickle the throttle. Finally someone like you who proves it!

@TubolMotoadventures

2 жыл бұрын

my yz250fx is 220h with the stock piston.. I'm not a fast rider and only do weekend trails.

@HowardSail

2 жыл бұрын

@@TubolMotoadventures That's a great example. It's not about the bike, it's about how you use it.

@mackeymichael

10 ай бұрын

That one of the reasons we keep buying Yamahas @@TubolMotoadventures

@videocardzrule354

2 ай бұрын

I heard of KTM’s going 300+ hours on top end easily and still running great! I’m certain the Yamaha’s can do it too! ❤

You're inspiring me! I still want to keep my 4t but I've been getting more and more into buying a used yz125.

@owenstuber7131

3 жыл бұрын

you won’t regret it i have a 05 yz125 and it’s awsomr

@liamhartman7398

3 жыл бұрын

Bro get a 125, I've had my kx125 for years. I've had 450's 250's and all sorts of other bikes. As long as you mix your gas to the right ratio and keep it maintained you can get lots of hours out of it. Not only that, they cost about 1/3 of the dough to rebuild

@creature3231

3 жыл бұрын

I did lol had a 2013 crf250r setup perfect for the woods traded for a 2015 yz125 threw the lectron/boyesen combo she’s like a Mtn bike with power it’s great

@nathanelliott6770

3 жыл бұрын

I have a 2000 yz125 and lemme tell you it’s amazing! It’s so light/flickable and FAST you should totally get one!!

@karolykass7980

3 жыл бұрын

@@liamhartman7398 Let's say 4T got 1L oil what u change every 10h. 2T got 1L gear oil what you change every 10h So that's equal right? Have you measured how many L engine oil u mix /100h ? I help you. Your ratio is 1/40. So 1L to 40L petrol. 40L petrol is raffle 6-8 h ride?! So you need 15L engine oil/100h 45L/300h where u rebuild the bottom. Now count how much 45L 2T good quality oil and rethink which cheaper.

Great video! I love the Lectron H-Series I bought for my 1991 cr125r it's really brought some more life out of the bike.

This is awesome to see someone going the hours and proving it on vid for us, on his own bike. Vegas Romaniac also did 250 hours on his yz250fx w/ oil changes at 30-40 hours, and sent oil in to get results. His bike is around 300 now still strong. Yamaha's performance + reliability is amazing.

I love the channel, love the content! Great job on the rebuild!

Thank you Brad! You are nice polite young man. Way better rider than I am or ever was at your age. I'm gong for the YZ 125X for my KTM300 replacement. The 300 made me a lazy rider. Thanks for offering kits for this bike at a reasonable cost. I wish you the best of luck on your channel.

@BeRAD

3 жыл бұрын

Thanks a lot for watching Christopher! I think you’ll have a lot of fun on the 125. I definitely prefer it over a 300 for fun riding. I have a sale going on right now. Code “laborday20” gets you $20 off an order of $150 or more. Valid through Labor Day. You’ll save a total of $53 on the freight train package with that 😁

@marcbernard2411

3 жыл бұрын

I agree that the YZ125X will cure you of your laziness! But you might miss the electric start, especially if you stall in a tight spot going up a slope. Include in your choices the 150XCW, TE150 and Beta 200RR if you don't want to kick start only.

@jeremy7818

3 жыл бұрын

Marc Bernard 2021 ktm 125 xc - it’s going right after the Yamaha enduro 125x crowd. No tpi. And trail ready with kick and e start, larger see through tank, and lighter than all the tpi’s... it’s the only thing keeping me from jumping on the 125x. It’s priced to compete with the Yamaha looks like. More... but not a lot more.

@kaden8096

Жыл бұрын

Don’t be fooled be rad is a asshole

:D i have 697 hours on my KTM 200 EXC 2016 and i am still using original cylinder (i change piston every 90 - 100 hours)

@dawkinschmidt3921

3 жыл бұрын

What fuel oil ratio do you use

@lukasraus3391

3 жыл бұрын

@@dawkinschmidt3921 1:60 and i am using ENI (agip) kart 2t oil

@dawkinschmidt3921

3 жыл бұрын

@@lukasraus3391 isn’t that a pretty oil lean mix

@lukasraus3391

3 жыл бұрын

@@dawkinschmidt3921 it is recommend ratio from KTM

@stevenlol3845

3 жыл бұрын

@@lukasraus3391 r u sure? i wouldv thought more like 1:30/40

Awesome video keep up the good work man!

TIP: leave the rad cap closed before you remove the drain plug. Open the cap when you are ready for rad fluid in your eyes.

@chickensfloat7427

3 жыл бұрын

I prefer to open it first then relise the pan is no where near the drain and watch it piss all over the floor

@HWG-wm8ld

3 жыл бұрын

I drain it from the hose that connects to the pump, then the pump.

@TroNPopz209

3 жыл бұрын

@@chickensfloat7427 LMAO

@wipperwil

3 жыл бұрын

Tip2: get off your wallet and pay a mechanic - spread the wealth to prevent unemployment! 😜🥓

@TroNPopz209

3 жыл бұрын

@@wipperwil I wouldnt trust someone else to work on my bike. I can rebuild and buy parts for any piece of it. Not sure why i would pay someone labor for a a few beers and some hours of wrenching in my garage.

I like the barn backdrop.

TIP: You don´t need to take the cylinder head off, in that way you save time and a new head sealing.

@BeRAD

3 жыл бұрын

I wanted to show the inside of it for the video.

At 5:52, when tightening the powervalve shaft nut, lock the linkage from moving with the tool kit supplied collar (or use a 1/2" deep socket) otherwise you risk bending the linkage.

@RobertDamien8687

9 ай бұрын

What kind of socket size can be used?

@michellatour150

9 ай бұрын

The exact 'bolt' size (10mm, 12mm, 7/16" etc.) of the socket doesn't matter, you are simply using the outer diameter as a 'stopper' not to bend the linkage as you tighten the nut. The usually supplied factory tool with a brand new bike is an aluminium dowel about 9/16" (14mm) in diameter by 2" (60mm) long. @@RobertDamien8687

Have you considered an aftermarket pipe? It could really compliment the modifications you have made. Two strokes are super sensitive to expansion chamber changes.

The bike is brand new. Congrats.

Dam with the wheelies ! Nice . That's some balance .

What’s cool is that BeRad doesn’t look like a fast rider, but he is

85 hrs and that looks great! Just Did a top end on my sons yz125x at 50 hrs. Ring was worn out. Besides the burnt up piston everything else inside looked great. Not sure why his ring was worn out so quick. But glad we caught it before any real damage happened. Out of an abundance of caution I am going to pull it apart in another 25 hrs and have a look to see if this was a fluke. Sweet video!

Leave your radiator cap on when you undo the drain, then remove it slowly and raise the bottle to meet the increased flow ;-) What's your plan with the barrel when it reaches service life, new one, reco or sleeve?

awesome sauce.. well done vid sir

@BeRAD

3 жыл бұрын

Thanks mark!

Did you check for play on the lower rod bearing? I think I used to replace the wrist pin, and wrist pin bearing and circlips when replacing piston and rings......that would be a few years ago (45)😂😂😂😂.

1:52 remove drain bolt FIRST, place the container under the drain hole and THEN remove radiator cap ;)

Thanks for the excellent info and video. I would like to get a 125x but would want a bit more for my size, I had a 2005 and loved the handling but needed a bit more for the technical hills. Have you considered going 2mm up on the bore and stroke, I have heard great things about this combo and it would be great to see you do a similar video for that upgrade.

@greg6162

Жыл бұрын

I’m 6’3 200/lbs what’s a good starter bike? Probably Yamaha’s for size and good suspension?

such a good video , subbed with notis

@backyardbraaapn1017

3 жыл бұрын

Wtf is a "notis"

Instead of spending nearly 1k on parts you could... -set the float height and jet the keihin. -get the oem head straightened out. -skip the rad valve. And you would have 99% of the performance for 20% of the cost. 2nd, this guys riding is off the chart. Wow.

@BeRAD

3 жыл бұрын

To start, it’s a mikuni on the 125. I travel a lot and so do many others. That means change in temperature and elevation. I tried doing the whole re-jet every other day thing on my 250x while on the road and that got old on about one day. And YES it runs like poo with the stock carbs when changing elevation. For the head, there’s more to offer than just fixing the squish, it has more coolant capacity and also allows for changing out the dome if you want different power curves. Although the OEM yamaha reeds are pretty good, the RAD valve has a smaller inlet which in theory will increase air velocity and provide better torque. Works well in co junction with the tapered bore of the lectron carb! So yes, you could do all of those things and then have a cold day and your bike won’t run like how you tuned it not would you get as good of cooling which is very crucial for technical riding that I and many of my customers do! Thank you, trying to improve every day I ride!

dammit, as if i needed another reason to get a smoker!

muy bueno bro! cada cuantas horas se lo cambias?

might be time to do a new build video on a bike that flo yellow yz build was bad ass i liked your build video

so wow . much majestic .

@BeRAD

3 жыл бұрын

Was the audio quality okay for ya? 😂😂

sick bike!

I love how clean the top end was. When I pulled my top end on my cr125, it was damn awful lol

@backyardbraaapn1017

3 жыл бұрын

You're not doing proper maintenance or you're skimping on which oils you use

@Grovers_garage

3 жыл бұрын

@@backyardbraaapn1017 it was a used bike. I bought it, rode it for half a season (literally like 5 hours maybe) then tore into it. Last owner was stupid cheap and never really looked after it. That's why it was an issue

Awesome vid! How tall are you BeRad?

@BeRAD

3 жыл бұрын

Thanks! I’m 6’ 170+

@melvincrosby874

2 жыл бұрын

sorry to be offtopic but does any of you know of a tool to log back into an instagram account? I was stupid forgot my account password. I love any tips you can offer me!

@gavintitan8796

2 жыл бұрын

@Melvin Crosby instablaster ;)

@melvincrosby874

2 жыл бұрын

@Gavin Titan Thanks for your reply. I found the site thru google and Im in the hacking process now. Looks like it's gonna take quite some time so I will reply here later when my account password hopefully is recovered.

@melvincrosby874

2 жыл бұрын

@Gavin Titan It did the trick and I finally got access to my account again. I'm so happy:D Thanks so much, you saved my ass!

Awesome video, just subbed to the channel! It hurt my soul seeing that left radiator, what happened to it?

@BeRAD

3 жыл бұрын

Hah that happened my 3rd day of riding it. JB weld has held up for 120 hours! 😂😂 thanks for subbing and watching

Cool Vid big Dogg

That's why I love Yamaha there Powerful and Bulletproof which is not something common when it comes with Dirt Bikes I own a 2006 Yamaha YZ250 I once did 121 hours on the thing never blew I decided to put a 325 ESR big bore kit on the bike and trust me it bites back I am also a track and enduro type rider

@fastride068

3 жыл бұрын

Wow I dream of putting a 325 kit on my 1999 Yamaha YZ250 But please answer why would you go 120 hours why risking it?

@sledhq9462

3 жыл бұрын

@@fastride068 I suggest you the esr 325 but please change your jets for bigger ones as the description of the kit recommends you I did 120 hours for testing purposes lmao I own a KTM 525 EXC-f and well my YZ 250 I wanted to test how far I would reach nefore having blew up I did 121 and still ran good I gave up my test and gave her the 325 kit

What was your compression roughly before you replaced top end ? Mines at 130 should I replace ? Runs perfect . Thx :)

Couldn't you hone the cylinder out to make it last that much longer? Great clip

I just rebuilt my 2020 Yz125x at 62 hours!

Do you think it’d be an upgrade to run a dual ring piston for your style of riding

I have a 2017 YZ 125 that I have more or less made into an X. I am still looking for some bottom end power improvements and have been toying with the idea of putting a lower compression head and the CDI off an X to improve things a bit. Did you find a considerable difference with the mods you made, and have you heard of anyone doing the CDI change? I also have a 2017 300 XC-W Six Days which I love, but the 125 is so much fun. We ride in the Eastern slopes of the Rocky Mountains near Calgary, Alberta so the trails can be wide open to super tight and technical. I am 6'1" and 195lbs and fit, so I enjoyed riding the 125 last season. Any advice would be appreciated. Great video by the way.

Don’t think I didn’t see that jb weld on the radiator! lol we’ve all been there just thought I’d call you out for it

@BeRAD

3 жыл бұрын

Since the first week I had it! Just busted it open again today....held up for 120 hours lol

Love the camera work on each step by step, fuckin a

The more I watch your videos the more I want a 250X. I think my 250FX would get jealous.

@BeRAD

3 жыл бұрын

Doooo iiittt!!!

Don't be afraid to run more 2 cycle oil than the manual says. It is the key to top end engine life. I run 5 Oz per gallon.

What’s your brand of choice for two stroke oil and what ratio?

Blu crew 😉💙

He's such an impressive rider

@BeRAD

3 жыл бұрын

Thanks man!

lol nice wheelie at the end man... been saving and going to get the yz125x finally got all the money together. in your opinion im riding a ttr230 at the moment (yes i know underpowered trail bike) been riding my whole life, tt3230 is my wifes old bike, I'm 5'9 150 pounds been beating the crap out of the ttr230 and its not really holding up to my abuse on the trails. would the yz125x be a good choice for me? or spend the little extra and do 250x. i ride single track trails mostly. in BC Canada thanks in Advance

I haven't cracked a bolt on my RMZ since i got it 10 years ago.

This is awesome

@BeRAD

3 жыл бұрын

Thanks rob!

My dad used to get over 100 hours on his 81 yz250 h between top ends and he raced and paddock rode it

Thanks for the great video! Nice to see the bike held up well. 82 hours our of a 125 top end is impressive. What 2-stroke oil and mix ratio did you run?

@lenny3394

3 жыл бұрын

Think I heard that he runs amsoil dominator at 40:1. I run yamalube 2R at 30:1 or castrol 2T at 40:1 with similar top end results.

@BeRAD

3 жыл бұрын

Dominator 40:1!

@GearinSuper

3 жыл бұрын

My yz125x has 50 hrs and runs flawless. I run Dominator 50:1 & valvoline full synthetic . I won't sweat a new piston for 80 plus hrs. Good view.

@lenny3394

3 жыл бұрын

Gear i changed mine at 61.5 hrs. It wasn’t too late but defenetly time. It all depends how you ride

@GearinSuper

3 жыл бұрын

@@lenny3394 nice. I ride woods trails. Im an older guy and I dont bang on it too hard

That is such a clean bike - even on the inside. Now for that enduro, young man.

When we gonna see a vid on that Montana ride?

Maybe this question was already asked and answered. Do you know what your starting compression was when new and just before the top end and also after you did the top end? Compression means a whole lot more to me than hours themselves.

The forces, which determine load and wear, go up exponentially with RPM, adding more low and midrange torque doesn't effect reliability!

I'm about to do mine now at 60 hours. Should I go from an A to B piston? Looks like thats what you did

this cylinderhead have this apex sx dome that you used more or less compression than stock?

What oil are you running. That piston was clean. And did you replace it with an oem piston?

What brand of premix oil do you use?

What do you think is the best ratio for a yz125?

Have you changed the handlebars on the bike or are they stock.

You install a oversize piston? Or keep the same size?

What do you mix your gas at Berad?

if i were to buy that head would i have to still run race gas and if not what gas would i need to run?

hey man I noticed you lived the road bearing with a red fluid? do you run atf in your gearbox? I've been running atf in my 06 ktm exc300 for a while now with no issues

What oil do you run and what mix ratio?

What did you use to torque the cylinder base nut inside the power-valve cavity?

@BeRAD

3 жыл бұрын

Gutentite method with a box end 😂

Hey man thanks for sharing. But at what ratio do you mix oil and gas, didnt hear you say anything about that in the video.

@peytonmccosco5712

3 жыл бұрын

Usually 32 to 1

@backyardbraaapn1017

3 жыл бұрын

It's not his responsibility to tell us how to mix. If you own a 2 stroke you should know!

Thats YAMAHA QUALITY FOR YA!

That is incredible. I am only getting about 40hrs out of a top end on my '16 Husky TE125 and I am nowhere near the rider you are. Mine has a much easier life.

@joshpashia637

2 жыл бұрын

I did 200hrs on a 2019yz125 and it still fired every kick and Iwas not easy on that bike 200lb rider. used a lectron.

What skid plate do you have amd where did you get it?

I have two KTM 200s and have been considering selling my 2000 to get a YZ125X for more faster open trails. What octane and premix ratio are you running?

Just picked up a 2023 yz125x brand new. I live in Canada and heard the carb has some jetting issues. Any advice on jetting specs outside of getting an electron carb. Once it's paid off I'll look at performance parts! Thanks

After looking at cylinder and piston, do you really think it was time to rebuild it? I'd say you could easily do some 150-200 hours before rebuilding it and would still be good :)

@BeRAD

3 жыл бұрын

Absolutely, but I had it apart so I may as well do it since it’s so cheap. Better safe than sorry! I’ll make another video about that

@dormantmenace

3 жыл бұрын

That's the problem with just looking. And not taking measurements

What 2 stroke oil are u using ?

Wait so how much can i put max on a stock 09 yz125 motor

Put a steel sleeve in it, run forged Wiseco pistons, and keep your air filter fanatically clean. Youll be astounded with how many hours you'll get out of it.

@64maxpower

3 жыл бұрын

Why would you run a steel sleeve?

@donalddonaldson7211

Жыл бұрын

@@64maxpower better than nikasil

i'd like to get a lectron for my KTM but can't come to spend that kind of money right this moment. probably a good investment though.

Are this parts also got the 250x ?

So if someone were to do a top end and the cylinder didnt have good crozz hatching what would you do

@loganchakos8301

2 жыл бұрын

hone it or replate it

You can def get more then 2 pistons out of a cylinder i would consider those general wear marks instead of even calling it light scoring, probly can't feel anything with your nail

@quadvloggs6876

3 жыл бұрын

@@coloradodirtbike5930 I'm not sure what your trying to prove to me buddy, I said his culinder is fine its general wear marks unless he can catch his nail on it. I'm a small engine mechanic no need to go on about ring gap for whatever reason lol

What oil mix you running?

Buy a compression tester. Check compression every now and then when you do your routine maintenance. Seems like a lot of guys don’t need to rebuild top end as often as they think they need to.

What was your ring end gap on the old ring just for stats

How long ago was 1988? Hmmm, let me see.. Okay I got it! 32 years. Still running the stock piston and clutch on my Fourtrax 250R. Is that bad? Longlivethefourtrax250r

@wackophobe2827

3 жыл бұрын

air cooled engines are something else, they will literally never break, with proper maintenance of course

What oil and ratio do you run?

I have 2024 125 x just looking what ppl have done for mods or improvements

@donalddonaldson7211

2 ай бұрын

Jd jet kit keep top end fresh clean air filter clean oil I run 15-40 for racing and keep it 30:1 semi synthetic oil let er rip

Is that Pipestone at the end?

@BeRAD

3 жыл бұрын

Yup!

@KincadePavich

3 жыл бұрын

@@BeRAD Awesome. I love it out there. I live in Bozeman and we ride Pipestone like crazy in the spring and fall. What brought you out there?

I'd ditch the funnel web has alot of bad reviews for letting dirt pass but I'm in Australia and it's extra dusty over here

I think they should change the regulations in the motocross so the piston need to last for example at least 100h for racing. The bikes would be 5kg heavier and would last much longer.

If I’m going to just use this bike for moderate trial riding and the bike is bone stock how long can I get out of it

When you tighten up the power valve linkage you need to wedge something in between the linkage and the head to prevent the linkage from moving when tightening.

@user-sg6fb4ip5h

2 жыл бұрын

Yes. I use a appropriate sized socket to act as a stop.

👌👌

A proper rebuild would include boring/plating that cylinder, and rebuilding it with the next oversize piston. That is of course if you want it to run right. Check your piston to cylinder clearance, ring end gap, deck height, etc.

@BeRAD

3 жыл бұрын

Certainly. I really did it to make the video and at least have a fresh piston and rings in for a trip out west. It’s holding up great another 50 hours later.

@lazarmrsic5623

3 жыл бұрын

American 015 when i rebuilt my bike all i did was wiseco piston and honed the cylinder and 45 hours Later of some hard riding some easy riding it starts first kick and my cylinder was god i just honed the little scratch it had

@sarahblase3447

3 жыл бұрын

With a plated cylinder, you shouldn’t need to redo the cylinder every time you replace the piston and if you do have it replated, it can easily be returned to factory specs, so no oversized piston required.

How often should I rebuild my top end? What’s the most hours I can push on the bike before I damage my top end ?

@paahtopro3950

3 жыл бұрын

depend on ridind style bike and lot of other factors

black and blue plastics be fire

I got v force 3 reed shud have got that man

What torque wrench is that?

What are some visible or noticeable signs that you should rebuild the top end?

My sons ride hare scrambles. They go pretty go. We are doing pistons at 20 hours and less. Any more than 20 hours has seen catastrophic piston failure. Can't tell why the failure. All stock.