2020 Yamaha YZ125X Build & Review - Is this bike for you? Or is this an inexpensive midlife crisis?

EPIC 2020 Yamaha YZ125X Build & Review - Is this the bike for you? Will this suffice for your midlife crisis? It is cheaper than a sports car... Great bike for the right rider!
Big Thanks to All Below!!
+ BeRad @beradmoto & berad-products.com
+ Motosport @motosportinc & motosport.com
+ Rocky Mountain @rmatvmc & rockymountainatvmc.com
+ SMART Carb @smartcarb & smartcarbfuelsystems.com
+ Seat Concepts @seatconcepts & seatconcepts.com
+ CYCRA @cycra & cycra.com
+ ASV Levers @asvinventions & asvinventions.com
+ Tusk Brake Lever @tusk_powersports & tuskoffroad.com
+ ODI Grips @odigrips & odigrips.com
+ Motocal Graphics @motocal.mx & motocal.com
+ MotoHose @motohose & motohose.com
+ Boyesen @boyesenfactoryracing & boyesen.com
+ Fastway Pegs @fastway.moto & fastway.zone
+ Funnelweb Filters @funnelweb_filter & funnelweb-filter.com
+ Steahly Flywheels @steahlyoffroad & steahlyoffroad.com
+ APEX Heads @apextechnicalinnovations & atinno.com
+ FMF Racing @fmf73 & fmfracing.com
+ Blud Lubricants @bludlubricants & bludlubricants.com
+ Rekluse Clutches @rekluse_motorsports & rekluse.com
+ HRT Hansen Racing Team @hansenracingteam
@lovefirstworld & lovefirst.world
++++ Video Contents ++++
0:00 INTRO
1:11 Quick Review
2:16 Tear Down
3:05 Engine Tear Down
4:44 Engine Rebuild
5:04 APEX Head & Squish Check
5:51 Steahly Flywheel Install
8:58 Rear Shock Spring Swap
11:26 Boyesen Supercooler Water Pump Install
12:43 Rekluse TorqDrive Clutch Install
16:21 Fastway EVO Peg Install
18:09 Michelin Starcross 5 Soft Install
19:50 Bar Components
21:10 Motocal Graphics Install
22:47 MotoHose Install
23:51 Final Stages of Build
24:55 The Reveal
26:40 Will it Run?
28:14 Tweaks & Sprint Enduro Race
33:03 SMART Carb Install
35:25 SMART Carb Testing
36:13 SMART Carb vs. Lectron
38:06 Final Bike Review
41:32 Parts Review
47:45 Closing
48:39 Blooper Reel
#YZ125 #bikebuild #dirtbike #yamaha #projectbike #2stroke #smartcarb #rekluse #midlifecrisis #iloveyou

[@slayer6936]

61 and love the fumes of 2 strokes in the morning!!

[@LoveFirstWorld]

ABSOLUTELY!!!

[@treadway47025]

Love the Yellow and Blue scheme! Enjoyed the video, nice job!

[@WVMOTARD]

I am 53 and race my 2021 yz125x in GNCC races and love it!!!

[@LoveFirstWorld]

Awesome!! They are so much fun to ride!! Keep it up!!!! Thanks for watching!!

[@slayer6936]

Being a disabled vet the 125 would be a great start to get back into riding!!

[@LoveFirstWorld]

Agreed!! Should be perfect!!

[@kenhart4205]

LoveFirstWorld - Nice bike build, and thanks for the vid. You gained a subscriber. Vince - I am 6'2" and weighed 215 lbs last year (but dropped 35 lbs since last Fall) and really enjoyed riding my new YZ125X last year. My first ever two stroke took a few rides to get used to, but I love it now. Light, easy to ride and zippy.

[@MountainStorz]

Buying a '23 125x bike this fall!

[@kraighawkins2919]

Great video! Well done. I have a '15 YZ125, and couldn't agree more about the fun factor. Being 49 myself, it's all about the weekend smiles before heading back to work Monday. Glad to hear the smart carb is working out. I'm considering putting one on mine, but they sure are proud of them. Also been on the fence with a flywheel weight. I ride mainly faster single track, but do some moto as well, so I go back and forth on whether to get one or not. Oh, and really dig the yellow touches. I would have never thought of putting a yellow rear fender on with the blue plastics, but I have to say, it works! Keep up the good work.

[@Graplernapler]

I put a flywheel weight on my 17 YZ 125. It lugs much much better, and lengthened the low to mid power band hit. All stock otherwise. It’s a great bike. Enjoy.

[@crujones7679]

Great build. I am a fan and love the YZ125X. I also build mine up a little, but just a way different approach. Awesome video! Thanks for sharing!

[@LoveFirstWorld]

Thanks for that Cru!! Appreciate you watching!!

[@slayer6936]

Thank u for the list!!!

[@shopper5318]

Glad to see you still have the KDX.

[@LoveFirstWorld]

Ha!! Good catch!! Thanks for watching!!❤️👍🏻

[@SmartCarbFuelSystems]

This is an excellent, comprehensive video. Great job!

[@LoveFirstWorld]

Thanks for watching!! You guys have the best carb on the market!!

[@smokefentanyl]

Love the smart carb on my 125x , what fuel ratio do you run on yours ? Mines 32:1

[@slayer6936]

I am 61 and picking me up a 22 yzx125...yes retirement is boring!! Lol

[@LoveFirstWorld]

Excellent!! Should be fun!!

[@lazyenword]

great detailed video and build!

[@LoveFirstWorld]

Thanks for watching!! Really appreciate it!!

[@OlafThorbjorn]

Wow 🙌🏻

[@slayer6936]

Ok i am sold on the smart carb!! Because i will be going to the track which is at 1300 feeg to my placd in the mtns at 4500 feet!! So the smart carb would be my best bet!!! And i could see the difference in the way it ran with the smart carb!!

[@LoveFirstWorld]

Definitely worth it!!

[@russellserrani9751]

Amazing build

[@LoveFirstWorld]

Thanks for that Russell!! Appreciate you watching!!

[@davidhenn3452]

Great video !!

[@LoveFirstWorld]

Thanks for watching David!!

[@robw3761]

Thanks for the video I changed the rear sprocket right away from a 50 to a 48 and what a big difference there is no top end with that 50 at all as well as the mid range I don't understand these guys putting a bigger sprocket on the rear unless you are in really tight woods but even so I could ride mine with a 48 in the back in the woods 48 is the best all-around I'm perfectly happy with mine I haven't done anything but changed out the silencer put a FMF I kept the stock pipe because Yamaha makes an excellent pipe I did my research and did all the reviews had the stock carb jetted by the shop I bought it from it's a 2020 it was used but hardly had been ridden thanks again for the video

[@LoveFirstWorld]

Excellent!! Thanks for watching!!

[@dregsta]

Beautiful bike!

[@LoveFirstWorld]

Appreciate that!! Thanks for watching!!❤️👍🏻

[@dennyhleucka7786]

Excellent vid thank you for making it! I was wondering what fuel you are running with the apex head?

[@Randy_Cox]

Great build and race. Fun vid to watch and yes now I want a yz125. Lol

[@LoveFirstWorld]

Awesome!! Thanks for watching!! It's such a fun bike and we're doing a rebuild soon. Sent the engine off to now be a 167... Should be epic!!!! Stay tuned!!

[@macpac3803]

Streamline reflex make really nice levers too, usually a touch cheaper than asv also worth checking out.

[@anthonyminggia6794]

All I know is that it's an XL it's smoother than exlax alright!..great video!!

[@LoveFirstWorld]

That's hilarious right there!! Appreciate it my friend!! Thanks for watching!!

[@slayer6936]

I have been woundering what to use as a fuel mixture?? What do you suggest?? I thought it was spring,lol I would be out riding but snow!! Yes snow..lol Have a greatday, I was just wondering because of my SC2 Gets shipped out thei week and I was only going to 32 to one with the factory carb and breaking it in then change it. Have a greatday!

[@slayer6936]

I am going with the 51 in the back, until i get use to riding again!! It has been 21 yrs..lol

[@LoveFirstWorld]

Good idea!!

[@slayer6936]

Ok i set mine up with a pro circuit combo, a vforce reed,90z fly wheel waight, smartcarb, and went to a 52 in the back. Because of wers i ride in the mtns and the power is evenly all the way through with out have to be on the power band all the time, but they did change some from your your to mine. Barkbusters rock!! I will fell you in on mine more my asv levers are sweet. I followed pretty mush everything to what you did.. thanks for all your help!! What donyou run for mix! The only thing i have left to do is the apex head and water pump. I will change the clutch when this one goescto poop.

[@LoveFirstWorld]

Nice!! I’m 40:1. I’ve used pre-mixed VP and currently I’m using Klotz fuel and mixing it 40:1. No issues at all.

[@macpac3803]

Love the Michelin Starcross 5 my go to tires for any bikes

[@slayer6936]

I would like to get a list of all your mods??? Is there any way to get that from ya!!

[@mississippiknightriders5557]

nice job man.

[@LoveFirstWorld]

Appreciate that!! Thanks for watching!!

[@gumpycognac4505]

Great looking build! Loving my 23 250x. Meridian isn’t far from me (bossier city area), maybe I’ll see you on the track one day.

[@LoveFirstWorld]

Doing another build on the bike now. Hopefully new video in the next few months or so. Putting a 167 kit on the engine. Engine should be back in the next few weeks. Hopefully see you out there!! Thx for watching!!😎👍🏻

[@connorallen5150]

What happened to your lectron? Thinking about getting one of these and buying berads kit

[@slayer6936]

I am finally picking mine up!! Biden and his crap made it a night mare to get one!! I put a pro circuit set on it vforce 4 reed, pro taper grips acerbis skid plate and front disc brake protector acerbis frame protectors polisport swing arm protectors pro taper grips barkbusters hand guards same levers as you..and next month the smart carb!! Then i am going to get the same waterpump you have an head and getting a 7 oncs or 8..fly wheel and after 5he new clutch is done upgrading it to to recluse.?can can not wait!!

[@LoveFirstWorld]

Awesome!! Enjoy!! It's such a fun bike to ride!!

[@Coopdegras]

Nice video man although after selling my 19 250tpi it's made my decision a little more difficult just can't decide between the yz250 and yz125 I've owned both before my riding style favours the 250 but those 125s really do put a smile on your face.

[@LoveFirstWorld]

They're so much fun!! The weight and handling is excellent!! We're doing another build on it soon... Sent the engine off... It will return as a 167cc. They tell me it'll eat any 250F's lunch... We'll see!! Stay tuned!!

[@Coopdegras]

@@LoveFirstWorld I'm in it for the smile factor too I'm looking forward to finding a stock bike whatever I choose I'm just going enjoy building it as an ex mechanic it's as much fun watching it come to life as riding it. Look forward to the build I'm just a die hard 2 stroke fan and as good as the tpi I owned was it just wasn't a proper 2 stroke in my eyes carbs and cables all the way bud.

[@treadway47025]

Off topic but what chest protector you using?

[@slayer6936]

I am gettind the BeRad freight train kit and stuff to!!

[@LoveFirstWorld]

That will definitely help!!

[@slayer6936]

Ok just bought the SC2...so now it is almosr complete with up gradand that is the water pump and apex head!! With the pro Circuit pipe and vforce 4 reed and going up to 52 sprocket on the back will help with my riding..and now the smartcarb should tame it down with even power all the way through and the 6 gear transmission will be slick!!

[@robw3761]

Put a 48 on the back if you put a 52 you will have a lot more bottom end I took the 50 off and put a 48 on and that is the best all-around

[@slayer6936]

@@robw3761 for you! I live in the mtns and it is tight and step terrain and trail riding so that is why I went that route.. plus at 62 I do not need to go fast..lol.

[@robw3761]

@@slayer6936 lol I'm right behind you man I'm 61

[@slayer6936]

On your ASV levers..what was the model number and serial number?? I seem not to be able to get a matching set in Yamaha blue or di they cime separate?? Thank you!

[@LoveFirstWorld]

They weren't a set. Got them separately. Ordered them directly from ASV - asvinventions.com

[@slayer6936]

I am sticking to 51 tooth in the back..maybe!!

[@TubolMotoadventures]

Hi I have apex head and it's great thinking to get smart carb after watching your video. How is the fuel economy improvement with smartcarb? is the boyeesen water pump made a difference?

[@LoveFirstWorld]

I'm not sure on the fuel economy side, it had a Lectron on it when I got it so can't compare it to stock carb. I can easily get 40ish miles out of a tank even pushing it a bit. The water pump I'm sure helps with the temps but it never overheated prior to putting it on and you don't really notice anything after it's on. But I've had it in some pretty hard conditions and it performed flawlessly. Thanks for watching!!

[@vince5946]

I haven't owned a 125 since the 80's. Thinking about doing a similar YZ build but I'm 5'11" around 215-220 lbs without gear and wondering if the bike will handle my weight, power wise. What is your weight?

[@LoveFirstWorld]

Most definitely would be fine! I have a friend similar size. He rode it, got off and said… “I’ll take it!!” You’ll love it!! Thanks for watching!!

[@robertkoch5011]

You forgot to mention the racetech spring. Did you like that? From what you said you went up in spring rate a bit. Did that work out for you?

[@LoveFirstWorld]

Yes. I had to go up on the spring rate. The rates are on their website. You can put in your weight and riding style and it will choose the correct one for you. Worked great!! Thanks for watching!!

[@slayer6936]

I been watching that carb too..i seen otherf people say the samething..they went to the smart carb and after adjusting it was supposed to run z lot better!!

[@LoveFirstWorld]

It's well worth it!!

[@surfpr727]

How do you compare this bike to the KDX200? Specially concerning bottom end? Thanks!

[@LoveFirstWorld]

Hmmmm... Love the KDX but 2 totally different bikes for sure. The newer YZ ergos are much better for attach position standing and the overall handling is much better on the YZ. However the bottom end is substantially more on the KDX of course, you have to ride the 125 much harder and keep it in the pipe, whereas the KDX you can just blurp around like a 4 stroke. Any more questions let me know!! Thanks for watching!!

[@64maxpower]

Myself id skip the flywheel. To me it just slows it from revving where it makes power. But i havent tried one

[@slayer6936]

They had to trim some stuff off to get theres to work did you have to do the same!!

[@LoveFirstWorld]

Nope. Fit just fine. It's tight, but it fits...

[@SteveKiziak]

Nice build and really good video! Wondering what would make a bigger difference for improving low end, the apex xc head or the smart carb? I'm picking up my '22 YZ125X this week.

[@LoveFirstWorld]

Sincerely appreciate that!! I would say being that yours is brand new and you want to choose between the 2. I'd go with the Apex head first. Then later ad in the Smart Carb. And the Apex head is quite a bit cheaper than a Smart Carb so big savings for now. Thanks for watching!!

[@paddlegirl]

What size tires are you using?

[@LoveFirstWorld]

The rear is a 110/100-18. Front is an 80/100-21. Thanks for watching!!❤️🤟🏻

[@paddlegirl]

Thanks. Are you still running the stock gearing? Any noticeable changes going from the stock 110/90-18 to the 110/100-18?

[@LoveFirstWorld]

@@paddlegirl I’m running a 48 tooth instead of the 50. 50 was a bit slow for me. 48 works excellent. The tires are great and it handles amazing. The bike stays in rutted lines way easier than most bikes. I love it!!❤️👍🏻

[@tieoneon1614]

Sounds like it pulls so much harder u could go down some teeth in the rear!

[@LoveFirstWorld]

I started with a 48 on the rear and liked it. But we do a race or 2 in some hills and it just wasn't enough so I went one tooth up to a 49 and seems to be perfect!! Thanks for watching!!

[@marktarascio4766]

This is really sad that you have to put all this junk on this motorcycle when Hayden took the bike out stock and won an Enduro with it