I mean I have to break it to you you could have just brought an r3 instead of wasting money on such a terrible bike, my Aprilia rs 125 2 stroke does 117mph tuned and is still a 125 it has full arrow exhaust, ram air cone filter 34mm carb, v force 3 reeds, racing clutch, 17/40 sprockets, polished and ported 125 barrel
If you doing bore up, you only need 2 parts. the bore/cylinder and piston kit that match the diameter of your Spec. But it's not as extreme as this (125cc to 200cc) because you have to replace the cam or porting the intake and exhaust port (this is only optional, but recommended) and enlarge the chamber on the head Because if not, the piston will collide with the cylinder head, or it's easy to buy bore up kit that Including the head. If in the 150cc bore up range, you only need 2 parts, so it would be better if you change the cam and slightly enlarge the chamber to maximize the power. For more details, please search on UA-cam about bore up
@@domsventures3918on this video this is none map, only injection for 200cc and 21 rear horse power and 21 nm. And Now I making the map for 200cc and I will be 35 rear horse power maybe 35-38 nm engine 42-44 horse power and vmax 150km.h
MRB MOTOVLOGS! Where did our find the 200cc injection, off a 200cc bike? I have a Yamaha wr 125 with 200cc big bore & power commander and only was getting 16hp, what mods you using to get such high figures?
@@domsventures3918 205cc big bore kit Ceramic cylinder 205cc forged piston bigger valve cylinder head 23/20 camshaft sport for big bore kit 200cc injection better clutch gpr exhaust k&N filters Power commander v Parts from sxparts.com and the connecting rod from motogaga.com
hi guy I saw your video, is your speed in MPH ? or KPH ? and do you use any cylinder head (most important part after upgraded your cc) ? What's the name of your kit used ? Carburation or injection ?
That's KPH there's no way a R125 goes 130mph even with that kit, it's a fuel injected bike so you need to buy a fuel commander as well to map it properly for 200cc and upgraded exhaust, air and oil filters :) larger injector too and realistically need upgraded bottom end engine parts as well or they will blow up
@@richardneeves9095 and with a cylinder head upgraded you only take 130 KPH with a 200cc kit ? I think there's à mistake... This almost the original performances Give me your configuration I think you really need some help... Me with a 200cc kit (ful UMA Racing kit with all parts you need to upgrad your bike) I took 165-170 KPH and settings with power bench
@@matkaisencazou2296 There's no mistake that's why everyone says to just get a bigger bike trying to make a 125 faster is like trying to make a stone bleed... it's 75cc difference which is nothing other than torque and acceleration. They're not built for speed...
@@richardneeves9095 dude you're right for almost everything but one, the passion of modifications.... It can go far for some people as modify 125 4stroke engine... 👌😂
In all bikes and cars, etc., to get more speed it's necessary to longer the transmission ratio. The stock transmission ratio it's optimized by the maker for the power that the stock engine gives. With more displacement (but also with better air filter and silencer, more compression ratio, flashed ECU or larger carburetor, less losses for friction by lowering the drag coefficient of the oil engine by using some quality additive and a correct chain maintenance) an engine provides more power and hence more acceleration with the same transmission ratio... but not more speed if the maximum engine rpm are the same (and it's normally the case as it can't be easily changed this parameter, then it's not advisable at all if one wants the engine to last). With the new increased power, to get more speed there is that to change the front sprocket for another larger one (likely just 1 tooth) or the rear sprocket for another smaller one (about 3 teeth less in rear sprocket it gives same change in transmission ratio that 1 tooth more in the front sprocket, this is exactly so in the 15-45 sprockets ratio). It's not advisable to larger much the transmission ratio because all the components of a bike (tires, chassis, brakes) are thought to be safe up to an approximate maximum speed and also because the larger the transmission ratio the poorer the acceleration. In the worst case, with a too much larger transmission ratio the bike won't get even the stock maximum speed and will be very sensible to the load, slight slopes and / or front wind. Despite the rush for speed many young like, what you enjoy more and what's even safer than with the stock engine, it's a more vigorous bike in all traffic conditions, so indeed there is not need to larger the transmission ratio (or just a little) with a more powerful engine.
Nie wypowiem się co do żywotności teraz. Mechanik mi zjebał sprawę, bo inaczej tego nazwać się nie da. 3,5tys poszło w pizdu, wróciłem na 150cc i mam te 17 koni na kole, na 200cc było by 30 na kole lekko... Co do 200cc trzeba włożyć głowice sportowa, wal, czujnik wtrysku wtrysk itd...
@@damianmoto6115 myślę że max 30km na 200cc mogło by być pamiętaj że to prawie podwójny przyrost pojemności. Przy 125cc ma 15km plus jak tu kolega pisał to dochodzi do tego większy wtrysk i sportowa głowica
gaźnik to gaźnik - mechanicznie dawkuje ci paliwo przez dysze, więc jak tam potrzeba więcej dać to zmienia się jet'y na większą średnicę ;P Mapa jest natomiast jak masz wtrysk bo wtedy dawkuje to komputer (ECU) :)
@@TickleMouse1923 haha and neither will his 🤣 7 seconds is big bike territory no way his even if it does have a big bore which I doubt will do anything under 10 🤣
Do you need a reinforced crank or is original good???
What's maximum speed r125 with 200cc bore? Its only cylinder or cylinder with cylinder head?
What bhp is this now
How did you get a ecu kit for it as I can’t seem to find any for yzf newer then 2013 I want to do the same
I buy powertronic ecu and modify by myself
Damn this is an awesome project! Is this the most powerful yzf-r125 based bike then? Seems like it might be..
Now Is more powerfull :D 240cc :D
video maybe at 03.20.2020
I mean I have to break it to you you could have just brought an r3 instead of wasting money on such a terrible bike, my Aprilia rs 125 2 stroke does 117mph tuned and is still a 125 it has full arrow exhaust, ram air cone filter 34mm carb, v force 3 reeds, racing clutch, 17/40 sprockets, polished and ported 125 barrel
The Sweeney Boys At least it won’t brake as easily as the aprilla.
@@mrbmotovlogs5654 oh wow awesome. I look forward to new video :)
@@diochimp8890 😂😂
wich exhaust?
Zebatki oczywiscie seria.. dobry mózg jestes
would i need to change the cylinder head to match the 200cc bore? Or can I use standard head
If you doing bore up, you only need 2 parts. the bore/cylinder and piston kit that match the diameter of your Spec. But it's not as extreme as this (125cc to 200cc) because you have to replace the cam or porting the intake and exhaust port (this is only optional, but recommended) and enlarge the chamber on the head Because if not, the piston will collide with the cylinder head, or it's easy to buy bore up kit that Including the head. If in the 150cc bore up range, you only need 2 parts, so it would be better if you change the cam and slightly enlarge the chamber to maximize the power. For more details, please search on UA-cam about bore up
Do you still have the Yamaha 125? Just curious, what year is this bike? Thanks?
its a gen 2, i have one. can be anywhere from 2014-2018.
What is the fine for driving an a1 motorcycle with bigger cc than 125?
Das ist fahren ohne Fahrerlaubnis, also nicht zu empfehlen
What’s the biggest Stroker Kit you can put on this 125cc engine ??
Thanks 😊
70-72mm ~230~240cc
200 is the most the engine can handle while staying reliable durinf everyday use
@@banze4542 would you need to change the cylinder head to match the 200cc bore
@@thejakeanade1601 Yeah i know mate.
@@banze4542 no I'm asking you. Can you run a standard head on a 200cc cylinder?
Do you use a power commander? Did you take it to the dyno?
Yeah I have power commander v.
I didn't.
MRB MOTOVLOGS! Makes sense, how did you get the fuelling accurate? There is no custom map for 200cc on power commander
@@domsventures3918on this video this is none map, only injection for 200cc
and 21 rear horse power and 21 nm.
And Now I making the map for 200cc and I will be 35 rear horse power maybe 35-38 nm engine 42-44 horse power and vmax 150km.h
MRB MOTOVLOGS! Where did our find the 200cc injection, off a 200cc bike? I have a Yamaha wr 125 with 200cc big bore & power commander and only was getting 16hp, what mods you using to get such high figures?
@@domsventures3918 205cc big bore kit
Ceramic cylinder 205cc forged piston
bigger valve cylinder head 23/20
camshaft sport for big bore kit
200cc injection
better clutch
gpr exhaust
k&N filters
Power commander v
Parts from sxparts.com
and the connecting rod from motogaga.com
hi guy I saw your video, is your speed in MPH ? or KPH ?
and do you use any cylinder head (most important part after upgraded your cc) ? What's the name of your kit used ? Carburation or injection ?
That's KPH there's no way a R125 goes 130mph even with that kit, it's a fuel injected bike so you need to buy a fuel commander as well to map it properly for 200cc and upgraded exhaust, air and oil filters :) larger injector too and realistically need upgraded bottom end engine parts as well or they will blow up
@@richardneeves9095 and with a cylinder head upgraded you only take 130 KPH with a 200cc kit ?
I think there's à mistake... This almost the original performances
Give me your configuration I think you really need some help...
Me with a 200cc kit (ful UMA Racing kit with all parts you need to upgrad your bike) I took 165-170 KPH and settings with power bench
@@matkaisencazou2296 There's no mistake that's why everyone says to just get a bigger bike trying to make a 125 faster is like trying to make a stone bleed... it's 75cc difference which is nothing other than torque and acceleration. They're not built for speed...
@@matkaisencazou2296 a 300cc R3 barely goes over 100 so why would a 125 with a bigger top end? the rest of the engine and bike is still 125 spec
@@richardneeves9095 dude you're right for almost everything but one,
the passion of modifications....
It can go far for some people as modify 125 4stroke engine... 👌😂
Powiedz mi, jak to zmieniłeś? Czy zmieniłeś kartę paliwową? lub po prostu zainstalowałeś go i wszystko?
Wtryskiwacz pod dana pojemnosc zalozylem
Gdzie można dostać wtryskiwacz
Same speed as 125ccm
No ecu change but now is diffrent speed :)
In all bikes and cars, etc., to get more speed it's necessary to longer the transmission ratio. The stock transmission ratio it's optimized by the maker for the power that the stock engine gives. With more displacement (but also with better air filter and silencer, more compression ratio, flashed ECU or larger carburetor, less losses for friction by lowering the drag coefficient of the oil engine by using some quality additive and a correct chain maintenance) an engine provides more power and hence more acceleration with the same transmission ratio... but not more speed if the maximum engine rpm are the same (and it's normally the case as it can't be easily changed this parameter, then it's not advisable at all if one wants the engine to last). With the new increased power, to get more speed there is that to change the front sprocket for another larger one (likely just 1 tooth) or the rear sprocket for another smaller one (about 3 teeth less in rear sprocket it gives same change in transmission ratio that 1 tooth more in the front sprocket, this is exactly so in the 15-45 sprockets ratio). It's not advisable to larger much the transmission ratio because all the components of a bike (tires, chassis, brakes) are thought to be safe up to an approximate maximum speed and also because the larger the transmission ratio the poorer the acceleration. In the worst case, with a too much larger transmission ratio the bike won't get even the stock maximum speed and will be very sensible to the load, slight slopes and / or front wind. Despite the rush for speed many young like, what you enjoy more and what's even safer than with the stock engine, it's a more vigorous bike in all traffic conditions, so indeed there is not need to larger the transmission ratio (or just a little) with a more powerful engine.
A co pasuje jeszcze wymienić jak się zakłada taki cylinder ?
I jak z żywotnością silnika
Nie wypowiem się co do żywotności teraz. Mechanik mi zjebał sprawę, bo inaczej tego nazwać się nie da.
3,5tys poszło w pizdu, wróciłem na 150cc i mam te 17 koni na kole, na 200cc było by 30 na kole lekko...
Co do 200cc trzeba włożyć głowice sportowa, wal, czujnik wtrysku wtrysk itd...
@@mrbmotovlogs5654 Ja mam 15.5km na polini 80 am6 nie opyla sie wykladac 2000 za 2 konie
@@damianmoto6115 a gdzie masz napisane ze 2 konie daje ?
ten zestaw daje drugie tyle mocy czyli z 15 robi sie 30 lub 35
@@mrbmotovlogs5654 W 4t ze 125cm na 200cm 30km zapomnij :D
@@damianmoto6115 myślę że max 30km na 200cc mogło by być pamiętaj że to prawie podwójny przyrost pojemności. Przy 125cc ma 15km plus jak tu kolega pisał to dochodzi do tego większy wtrysk i sportowa głowica
Do you know if the 200cc kit fits a wr125x?
Mr.Ziko motogaga.com go there and ask owner
Mr.Ziko wr125x I think have 2008-2013 engine on page lc135 or r15 v2
Btc I have now 220cc engine from this page motogaga.com
Mr.Ziko I think i send video after winter
@@mrbmotovlogs5654 Do you need to buy a reinforced cranckshaft aswell?
India lunch date bro
are you having lunch?
Jak wygląda sprawa na gaźniku też trzeba mapę robić czy niekoniecznie?
gaźnik to gaźnik - mechanicznie dawkuje ci paliwo przez dysze, więc jak tam potrzeba więcej dać to zmienia się jet'y na większą średnicę ;P
Mapa jest natomiast jak masz wtrysk bo wtedy dawkuje to komputer (ECU) :)
help, my r125 race blue has top speed 134 Can you help me boost power?
Hello!
On stock or big bore kit?
@@mrbmotovlogs5654 on stock!
@@micaeloliveira8154 too small block for gain some horsepower, You need to buy big bore kit
@@micaeloliveira8154 visit this page motogaga.com and find yamaha r125/r15
@@micaeloliveira8154 uma racing parts or cardinals
Jaki v-max ? Ile km ?
Póki nie dogram konkretnej mapy pozostaje 140 po dograniu celuje w 180
a co to za kit?
@@crev499 kit 200cc z sxparts.com
@@mrbmotovlogs5654 No to chyba inne przełożenia trzeba będzie skoro teraz przy 140 jest odcina na 6 biegu
@@dawcavideo130 odcine na 14 I leci
Lol 138kmh in 6gear the bike does that as a 125 lol 🤣🤣 to get more speed go for 44 rear sprocket because standard one is 48tooth
Because this is a 125 lol no way this is anything other than bog standard my mt hits the same speeds and iv no fairings 😂
@@anonymous-ts6bmdo you know word "two stroke"
@@seoo-ix3hv iv had a few and also in a WhatsApp group with 2 rs125s and it's closer than you think around the back roads anyway
@@anonymous-ts6bm200cc doesnt add much top speed but helps with acceleration, your mt 125 wont go 0-100 in 7 seconds
@@TickleMouse1923 haha and neither will his 🤣 7 seconds is big bike territory no way his even if it does have a big bore which I doubt will do anything under 10 🤣
Ahahahahahah 140km/h