We Test Pro Circuit's 2023 Yamaha YZ125 TWO-STROKE

#motocross #sports #build #racing
The Yamaha YZ125 two-stroke is one of the most popular bikes on the market and it's resale price continues to hold its value. Yamaha is the only major Japanese manufacturer still producing two-stroke dirt bikes and they renovated this bike last year, making for an all-new 2022 Yamaha YZ125. The frame is the same, but the subframe, bodywork, and engine have been updated, which means that aftermarket has to update their products as well. This Pro Circuit-built 2023 Yamaha YZ125 is the new version of Pro Circuit's "Race Spec" engine and suspension for this bike, and we were the lucky ones who were able to test it.
In this video, MXA's Josh Mosiman and test rider, Ezra Lewis, talk about what it's like to ride the YZ125 and go into detail about the parts used on it. This bike comes with Pro Circuit suspension and link arm, Pro Circuit Works Pipe, Ti-2 Kevlar R304 Shorty silencer, Pro Circuit port and polish to the cylinder and head, Pro Circuit RV piston, GET ignition box, Pro Circuit ignition cover, Dunlop tires, Twin Air filter and more.
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[@JacksonD489]

This is pretty much the exact bike I've dreamed of Pro Circuit building, but then again, I dream of building a different bike everyday!

[@my2cents395]

There should be a 125 National class again.

[@brianwills4398]

Wish I could test ride that bad boy.. 125s for life.. it's funny to me that my friends always talk smack about me still riding a 125 at 50 years old. They can ride whatever they want but I promise you that they can't keep up. 🤙.

[@my2cents395]

I rode a 1976 OW 125, factory bike. It was water cooled and had the rad on the forks by the number plate. What a great bike. It was so easy to ride. The motor had a very smooth power band.

[@mikebrown41182]

Well anything Mitch grinds on will be screaming fast. I love it. The graphics were really cool aswell. Love it.

[@daneg]

Pro Circuit has always catered to pros and national level amateurs. not a knock. just thinking back to my days in the 90s, and if you just swapped out a pipe, the pro circuit was the best for high rpms, but bills and fmf widened things for the majority of ppl at the weekend track. yet pro circuit had the riders and the glam, so ppl would run pro circuit and actually nerf their lap times. ah well. all part of being a fan! 🤩

[@mikebrown41182]

@@daneg Yes, 100% i used PC back in the early 2000s aswell, and i worked with his riders back in 2010. So i have seen up close the standards that he puts on his mechanics and riders really shows why they win alot.

[@mikebrown41182]

@@EarthSurferUSA You do realise the pipes and silencers of two strokes in specific is generic of what the factories used, they implement that data, you are essentially riding what 22 rode when he was on his Yamaha yz 250. The only pipe and silencers that is different is Roczens one of stinger end, and RV’s spec pipe and in a way it is the simpliest changes you would never thought of.

[@60yroldRockstar-kl7mt]

Picked up my 2023 yz 125x on Saturday already looking at the jetting fix from Pro Circuit. We have way snow here in Canada so I have time to do more research...its a peach

[@andy5786]

Awesome 2023 yz125 guys thanks for brilliant test ride class👍

[@twistymcslide2]

one of the best mods i did for my 2022 , was changing from the factory 13/49 sprocket set up , to a 14/48 . you lose some of that low end corner issue because you can rev less but have more push rather than that need to over rev in order to get the momentum , and you gain 10% more top end ( per a sprocket calculator , its noticeable though ) . serves both ranges well . my bike is very similarly built , minus the custom suspension valving , and ported head .

[@ruigoncalves5301]

I have a YZ 125 2011, all stock , and i love the bike. This Pro circuit should be amazing

[@brentnearhood8874]

Nice! My first bike was a 1977 Yamaha 125. It was $800.

[@Pompomgrenade]

Just right for a screaming good time...🏁

[@jerryhill4893]

Solid steed!! Sounds real nice, clark.

[@wbryalo]

Sounds glorious

[@Drain09]

Love YZ 2 strokes

[@emexduzentos]

I rode a yz125 rolling chassis with a stock dt200 engine (17hp rwhp) and it was amazing how much fun I had. With their respective owners who were vet riders it was as fast as a 2000 cr125 but so easy to ride and non tiring. I could ride all day if possible. They were the only 2 strokes on the track but of course 250f's with younger riders flew over them.

[@jpesicka999]

I doubt it was as fast as an 00 CR125. I have a fully modded 01 CR125 and it’s easily as fast as a stock 2023 YZ125, I just rode both the other day at a Yamaha ride day.

[@emexduzentos]

@@jpesicka999 Every mx bike has about 16hp on its own the rest of the horsepower is at the throtle hand.

[@emexduzentos]

@@jpesicka999 Edited my first comment to make it clearer.

[@emexduzentos]

@@EarthSurferUSA The DT200 we have here in Brazil is a very detuned street version that has 25hp at the crank. My personal DT200 was a stock frame with modified engine it has 45hp at the crank and 38 at the rear tire but its impossible to ride mx so I use it for flattrack. It would be interesting to try fitting my engine to that bike because that YZ was magic with the SSS suspension. My personal mx bike is a Suzuki RMX250 which rides like a cadilac compared to a yz and is also very week in hp compared to modern 125. Bear in mind as I mentioned elsewhere that the riders/owners are vet so no real conditioning is expected. When I rode the bike I went much slower than them because I don't like to go fast on someoneelse's bike.

[@shf421]

Friggin awesome..............!!!!!!!!!!!!

[@jarvispitt9198]

Beautiful

[@daneg]

living on the east coast (upstate NY), I'm always so bummed when I see MXA test bikes at Glen Helen. It's so depressing. Everything looks dead, and I can't tell the track from the rest of the surroundings. Not today! There was actually green on the ground! shrubs of some kind? (alas, no grass). anyway, just had to say something as it was the first time I noticed any green at all at GH! 😄 I loved my CR 125 in the mid 90s. 125 2-strokes are crazy fun (even if too little bike for my 200 lbs). So light, even compared to 250 2-strokes. but my gawd! the clutch work. only bike I ever fried the clutch on was RM 125 at Southwick. ah. the salad days. Loving your vids. gonna have to sub the mag just to support the youtube content. Thanks guys!

[@2stepYo]

awesome bike

[@user-jc8ww5ec7m]

I love & miss the pro circuit YZ250 we ride WFO it came up missing and I have been MIA ever since Also, I want that KTM 300SX I seen you have fun one and I do feel like you the yz125 is still a lot of fun, you and your job rocks hard

[@nathanrobinson3257]

Siiiick

[@peterjanka2921]

Love to see a comparison of the VForce 3 and 4. Also not sure of the applications that the 4 is available for.. thanks.😎👍🏁

[@Junior-sh7hl]

Show moto 👏👏👏👏👏🇧🇷.

[@olivierbruhaux7240]

C’est interessant de voir les 125 rouler à un niveau national et je dis souvent qu’un 125 deux temps se pilote et c’est pas facile beaucoup de pilotes ne comprennent pas que le deux temps est plus dur à piloter qu’un quatre temps,le choix du rapport la position il faut sans cesse écouter le moteur le quatre temps et bien plus facile,cette 125 YZ pro circuit et un régal à voir 👍

[@denniswilder3014]

The fork sticker says 250 on it i noticed

[@mariaaparecidaaraujo3892]

Ea brabaaa

[@vwgtdturbo]

ohh shit awesome

[@dynaordie8083]

2 strokes kill it.. bring em back

[@straighttimestirrups]

Gotta test this against a stock KHGG 125 and see how it compares.

[@TheForthElement]

So what would be the price difference between the PC YZ125 and a stock fuel injected 125SX? And how would they compare in terms of lap times and handling?

[@weston5146]

@@EarthSurferUSA yeah man, i was born too late to experience the 2 stroke era, really wish there was still races for them at the higher level

[@timw4369]

the sound is amazing. When they went to 4 strokes they lost that and alot of the great noise that is sadly missing in the new corporate mx game. If i was the head of FIM i would bring back 2 strokes lower budgets and bring back the real privateers that have been squeezed out. Nobody is a privateer without alot of support which all comes at a cost.

[@jinoziniosti5633]

@@EarthSurferUSA He means its all owned and run by a monstrous corporation now

[@adampeters5369]

I completely agree , there is also a physical and mental feeling that has also been lossed with the 2 stokes missing , with 4 strokes are like if you have seen one or heard one then you have seen them all . With the 2 strokes we could also tell who was where on the track without even seeing or looking for them . All the fast guys rode at there unique musical note that was different from each other. A limiter is a horrible note very dull and generic nothing impressive about the sound of any 4 stroke that has ever been ridden by any rider in my opinion. Yea there easier to ride - way more expensive to buy and way more to keep running , yea they get better traction . All these map settings this and that - just throw a leg over the bike and use throttle management with your Brain body and throttle, a computer is not needed if your brain can do the thinking for you .

[@davidjackson7051]

Yeah makes sense when you say two stroke I think Yamaha always great bikes to ride n race

[@Cetrifuga1945]

Il cilindro innovativo e bello vero si

[@therawlifefamily]

wow... 3700 including fuel, seat cover, graphics and suspension... my supermini was 3500 for the engine alone 😭😭😭😭😭😭😭😭😭

[@reese3407]

That YZ 125 is a screamer

[@borehole8631]

Anything PC makes is the best. All I buy.

[@andikaoktavianto6047]

🤘🤘🤘🔥🔥🔥

[@racingfuel28]

If Yamaha ever stops making 125 and 250 two strokes, I’m pretty sure motocross fans are gonna riot😂😂

[@dg8062]

Peyton knows how to build some fast stuff.....he's a grumpy, nasty old dude tho.

[@jeremychristensen6518]

where's the pro circuit KX 125 head pipes for the 97

[@Mr.Stroke0331]

Nothing better than ripping a 2 smoker WOOOOOOOOOOOOOOOOOOOOOO

[@solyd_1369]

Where can you buy the pro Circuit stuff in Europe? l

[@lerongarnette7480]

I got that on my 85 😤😤😤

[@64maxpower]

What happened to mxa adding 1 tooth to every single bike they tested? If a bike came with a 72t rear sprocket they would add a 73

[@jacobshred67]

doesnt seem to go much faster then a stock one sounds great tho

[@Pezcrean]

Who sings the song at the start? ❤

[@nilediggs5794]

Wait, should anybody be thanked for this bike before it gets out of hand?

[@marco88co]

Only 2 seconds on a track like Glen Helen?

[@jameslyons1661]

❤🏁👍

[@64maxpower]

I have Tom Morgan do my bikes. I'd never let anyone else modify my bike

[@davidjackson7051]

Amazing how much speed u can get outta of a 125 so if you want a light bike buy a YZ 125 2023 right of the box o yeah😊

[@mikebishop6095]

And jet it

[@jamesconsiglio8029]

$3700 isn’t bad at all lol

[@hubertkam7647]

honda still makes two strokes and suzuki and kawasaki also still make two strokes

[@brettcrf]

2 seconds for 4k 🎉🎉😂

[@scooterinvegas1]

Over a 10 lap moto that's 20sec, almost a 1/3 of a lap. Could be the difference between 7th or 1st.

[@BadandBoochii]

That’s knocking on a minute for a 25 lap Moto and he hasn’t even got to gel with it yet . You heard him say it could be 3-4 seconds when he does , either a minute is important in a motocross race.

[@Sam-bz4hf]

Im getting one of these from sam oates bideford and demi the dog

[@danmandorca8390]

California is doomed but I won’t be for strokes another couple years or two strokes. As far as that goes. That’s an open track I’m from the Midwest there’s tight tracks in the Midwest two strokes predominantly do the best on Thai tracks.

[@JohnDoeEagle1]

ALL dirt bikes should STILL be 2-strokes and everybody who discontinued theirs never got the memo nobody wants a crappy 4-stroke off road bike. Keep those on the street where they belong and the 2-strokes off road on the track and dirt. The anti-2 stroke movement is specifically driven by the EPA and neighbors who complain about the noise and exhaust smoke. No other reasons exist why anybody should prefer a 4-stroke for this purpose. Same thing with all the junk heavy as a battleship 4-stroke weed eaters and leaf blowers. There is no reason for their existence either and they are way too complicated and cost a fortune to fix if anything goes wrong.

[@damonforrest1570]

Surprise that the pipe isn’t polished

[@moto3463]

I like PC products just wish Mitch Payton wasn’t so miserable

[@brandonfoley8070]

The welds on these new bikes coming out of the dealer does not look good

[@jinoziniosti5633]

@@EarthSurferUSA Well yamaha was the first to sell out to the globalists werent they..

[@brandonfoley8070]

@@EarthSurferUSA I think quality dropped during covid when nobody wanted to work and the hired bunch of nobody's in the factories. Ive seen bikes on the showroom floor with twisted front fenders. I guess that's what you get nowadays for a 8-11k new bike

[@MrJeffharper47]

I hate to be a “well technically” guy… but Kawasaki does still make two strokes. They make the 65, 85, 100, and 112. Why they don’t just go ahead and make the 125 and 250 is beyond me.

[@seantamke3108]

You know, That wasn't a real test. You should do multiple laps and let the rider get comfortable on both bikes. That's my opinion and I know I'm right. Multiple laps and take the best lap time of the multiple laps.

[@damonforrest1570]

That 125 halls booty

[@64maxpower]

2 seconds? Yeah right

[@64maxpower]

If he is the most stylish rider mxa has you guys must have some dorky looking styles

[@kev_ket6715]

Why don’t you show us your riding video’s doofus? They probably smoke your @ss , blindfolded.

[@kaeo7095]

First :)

[@user-sl1ov1ly5n]

compare this to a ktm

[@matthewtoes6433]

That pro circuit carbon silencer has lost the crisp lean sound it's horrible it's like it's running no exhaust at all I wouldn't buy it & choose FMF SYSTEM

[@AneroFilms]

wrinkles in the seat

[@JROC734]

Maybe next time PC can stop acting PC and get rid of those gay looking blue rims. Silver or bronze rims would look much better.

[@buddysumner4022]

The tried and true yz 125 it’s like a sore Peter you can’t beat it

[@G-T-S-J-FAMILIE]

just wonder wy you dont put a hgs exot on ? best 2stroke exot ever

[@bennyb.1742]

Because Pro Circuit built the whole bike.