my crf 150 with a straight pipe

[dur13579]

yea dumbass y not just blow up the engine

[Daschickenify]

Now get a 150R and give it a straight pipe

[Boeingbeatsall1]

That's a 150f dumb ass

Lol 2004

Ewe

[mxcavallaro]

good lluck with your valves

[kawasakiking28]

um well, that proves what you know about compression ratios there.. put the damn silencer on..

[coreyisbeast]

well i think that ur gunna need a rebuild soon

[coreyisbeast]

well i think that ur gunna need a rebuild soon

[mxcavallaro]

have fun remodleing your valves

[WildBilliamBill]

Funny to me how all you dumb shits think that its hard on a four-stroke to run a open header.. u dont need back pressure

[85ccmaster]

NNEWWWW-shift up-VALVESSSSS

[thektmracer104]

nice way 2 skrew ur bike plus thts not evn a 150r

[Raptor250racer]

trailer hood



[foxracing279]

there goes your engine. you need back-pressure you dumb fucker.

[ElijahWheeler]

@foxracing279 You Dont Need Back pressure on a 4 stroke as much as you need it on a 2 stroke.

[randyontoo56]

thats gonna kill ur bike. u just think loud is cool, yeah. for u its not

[tutanga14]

rednecks... thats so great on ur bike,

[camerajamma]

good way to fuck up a dirtbike btw looks like a piece of shit anyway so go ahead.

[sk8rseth18]

150f are a pile of crap. 150r are the best 4 stroke minibikes

[ownd1000souls]

nice if u want to wreck ur bike

[drummaboi93]

sounds like crap

[Cburkh17]

That sounds so horriable

[unit917]

ahahahah what a goon.

[uwanaugoda]

wow that sounds like a mexicans first car..ur not a badass cuz its loud and it hardly effects preformance in a positive way but fuckis it up in a negative way over a long period of time.

[honda420r]

sounds pretty good

[deerhunter12345698]

messes your engine up!

[marchondaracing]

you'll make hot spot on your exhaust valve...

[MotoRokStarR756]

dumass

[dirtbikekid12]

yaaaa burn those rings..

[CRF1fiddiyF]

ok first need some back pressare and second that sounds like shit and ur a fucking dumb ass

[ITSmeSNITCHES711]

bike sounds like crap.

[sxcluke2k7]

sounds like a loud and long fart tbh..

[dukeboy09]

wow everyone complains how that messes your engine up and takes away your horsepower and ive ran a straight pipe on my 1985 xr100 for many years and it hasn't hurt anything i smoke my friend on his muffled 2004 xr100......but anyway ur bike sounds good

[xtmxcellerator151]

dumfuck

[ltz250boy93]

my friend did that with his 300ex, he had to rebuild his motor

[dirtchamp32]

dude r u an idiot put the exhaust back on u lose like so much horse power and you might even fry you motor if you ride it lond enough

[TheHonda150f]

no shit that shit sounds gay as hell.. my shit sounds nice i go a big gun on mine

[USCisgay]

good way to burn your valves

[HMK4life69]

you no how hard on your bike that is it got no back pressure you fucking retard and he took eof the muffeller and left the header pipe retards:P

[enginerebuilder1]

u don't need back pressure. thats two strokes. if u want more power u need back pressure

[MrFubs]

both need back pressure.........

[TexasMotox09]

sounds retarted

[aovspike]

all he did was take off the silencer, too bad its a piece of shit trail bike

[BMOREKIDD410]

DATS A BAD ASS EXHAUST

[mbrp]

yeah your real fucking cool

[smartmeis]

sweet!

[teamkikturn]

that sounds like u bought it from k mart

[208hof]

you can ruin ur motor doin that

[drummadave60]

have fun fixin it wen your bike blows up from that

[brettb58]

wow thats stupid

[atvrider43]

couldn't u burn some kind of valves by doin that?

[seanBLACKBELTterry]

Why dont yall just go and buy a nice pipe thats sounds ecactly the same(if you dont go and buy a better pipe than put the stock pipe on it...!!!)

[JesseCoon318Honda]

wow a crf150f with the silencer off i think he feels special

[swissyboy19]

yeah really. LOL

[caseywoods5]

he took off more than just the silencer...

[HunjiFlar]

its called a baffel

[caseywoods5]

you mean baffle, and on a crf150f they contain a silencer AND the baffle. the silencer is the black insert for the baffle. but you were right, there is a part called a baffle.

[xXninjatrtleXx]

no the baffle goes inside the silencer. retard.

[caseywoods5]

no the silencer goes inside the baffle (spark arrestor). and don't call people a retard unless you actually know what you're talking about.

[xXninjatrtleXx]

the silencer is that big ass fucking second have of the exhaust. the baffle is what makes the bike slightly quieter. the baffle may contain a spark arrestor but that is not the BAFFLES sole function. just think about it; it someone is speaking and there voice is baffled, then it is muffled. hence quieter. dumbass

[caseywoods5]

whatever, if you're going to act like a 10 year old over something, atleast make sure you know what you're talking about. you can look in the owner's manual, service manual, and even call honda and they will tell you exactly what i have been TRYING to get into your head.

[SURFnSKIM11]

yea thats totally awesome and all but way bad for the bike don't run straight pipes much longer than that

[yamaha152]

go ahead and burn those vavles up

[tylerdeg21]

i've always woundered about that what vavles would get ruined

[95yz125]

wat do u mean straight pipe was ur other 1 gay bahahaha. do u mean pipe without a silencer

[paintballin247]

a straight hollow pipe

[mage2saradomin]

nice bike btw

[mrkilltron]

Have Tom Morgan rebuild your engine in Arazona, my yz 85 has a rebuild and i school my friends CRF 150. The only down side is that it runs on expensive racing gas.

[150Rkidd]

did you have to re-jett it after that

[Kx100212]

My kx100 eats crf150s for breakfast!

[svensson728]

wow im proud. I use to have a 150f. My yz450 eats u and ur 100 for breakfast.

[Kx100212]

yes probly but not me just my dirtbike. im only a kid buddy and i was comparing my bike to one that would run in its class. lets compare your to a 500cc two stroke

[nickmessin]

me and svensson728's yz450s eat ur 100 and it's older brother 125 for breakast so get a life and some longer legs and more money and become a better rider and stop tryin to make fights on youtube

[Kx100212]

well my kx250 eats the shit out of your 450 nick. i bet you dont even know how to ride a dirtbike you pussy.

[nickmessin]

i no thats funny how my bro has a kx 250 and dad has a kx 450f and we all keep up oh yeah and i have been riding scince i was 3 and motor cross for 6 years im only 16 i got nothin agains kx's it's just for u to say that about a bike that is a 2 stroke so it aint amazing u got that bike dude i might even get the kx450f so wat ever

[Kx100212]

im all two stroke! iv been rideing since i was 3 also. i started out on a two stroke then went to a four stroke and they just lack the insane power of the two stroke. im not saying they are bad but iv raced crf150s and have won on my Kx100. i have never raced a 450 on my 250 so i really shouldn't say anything about them. sorry dude! lets just ride mann!

[mage2saradomin]

2 strokes suck cause you have to rebuild top end every 5-6 times you ride them.4 stroke have way more power and thats funny how you say 2 strokes have more power.my ass they do.i worked on 4 strokes and rode them all my life. and i know that when you ride a 2 stroke you have to rap them out or they dont go anywhwere 4 strokes you can just power up like there is no tomarrow.so 2 strokes can beat 4 strokes on top end but not on power wise..

[xProtoxBallerx]

actually ur a dumbass, 2 strokes have high rpms whitch means more power. u must mean 4 strokes have more torque.

[mage2saradomin]

yes finally someone gets my point.but dyno a 4 stroke 150 and a 2 stroke 150.4 stroke beats on torqe but pretty damn close on power.and no im not a dumbass.i work at honda dealer

[xProtoxBallerx]

a yz 125 (2 stroke) makes more power than the yzf 250. so im pretty sure that a 2 stroke 125 would crush a 150.

[mage2saradomin]

2 strokes suck man they have no power what so ever you have to rap them out..4 strokes you can just power up hills with like quter throttle.ive been around dirtbikes forevre and owned lots of em.

[Kx100212]

yea Two strokes have no power... thats why a 250 two stroke will eat the shit out of a 250 fourstroke. and yes fourstokes will power up hills at quter throttle cause thats where the power band is. Two stroke power bands are at the top rpm range. And you suck dick at shifting is you rebuild the top end every 5 times you ride it cause i have had my kx250 for 5 years and havent changed the top end yet and its still good. so chill out and ride! Two stoke or Fourstoke!

[xProtoxBallerx]

ya these guys r retards

[xProtoxBallerx]

again... a 2 stroke 125 makes more horsepower than a 4 stroke 250. and if they would make a 2 stroke 450 it would wrek the 450 4 strokes

[bujeya27]

lol cr 500 in a 450 frame cant get much faster on the track

[dirtrider2009]

noooo. it t6akes about a 144cc 2 stroke to make the sam horsepower as a 250 fourstroke. i 250 two stroke is actually more similar in horse power to a 250 fourstrokje than a 125. i know it sounds weird but racerX did a thing on it

[greendayfan199]

ohhh buddy your going to fuck that bike up really soon if you ride it like that

[t4oe]

that will fuck your bike up hard i took my bafel of my thumpstar and within a month bang piston cracked

[tmk107]

nice! I dont know if it will hurt ur bike, but i know for a fact it wont help ur bike, hope nothin happens sense parts are so fukin high on 4 strokes

[pancho0022]

dam right its so cheaper to rebuild a 2 stroke than a 4 stroke!!

[SilvaMechanic]

yeah but for everytime you rebuild a four stroke you rebuild a two stroke five times

[pancho0022]

yup thats true

[stoichiometric]

I sense a 2stroke vs 4stroke fight a-brewin :D

[alexcandy1411]

Sweet! I bet THAT would keep the neighbours happy. Lmao nice bike.

[joekx85]

what happend to yous side pannel lol

[TannerBurtt]

sounds like shit

[Auz26]

i took the spark arrester out of my 100 for 2 years and nothing ever got messed up

[eatmydirt85]

Well if that bike is as shitty as his brain, I could see that sliped by as gay.

[rooney62danny]

my xr 250 sounds better !!

[666beaner666]

no one cares!!!!!!!!

[rooney62danny]

i do!!!

[welshjo1721]

yea...and your no one!!!

[rooney62danny]

hmm good comeback...

[welshjo1721]

dam straight

[markkunerth]

if u want loud get a crf 250 dual exhaust

[JGthehomie]

dat SHIT IZ LOUD AS A MATHA FUKIN

[1983cr125]

do u think a crf150 motor would fit in a cr125 my blocks is damaged and i was thinken of putten a 150cc 4 stroke in it for stunten and trail riding do u think it will fit

[cityskater13]

it might but i doubt it i got the crf 150 its a nice bike

[1983cr125]

can u do me a favor?lol u dont gotat but would u beable to measure how tall the motor is and how long the block is.thanx

[sharpshot411]

dude that would be just plain stupid to put a 150 4 stroke motor in a full size bike. The top end and bottum end are easy to fix. So why go off and put a motor thats way to small for a fullsize bike. Your lossing a assive amount of power by doing that.

[1983cr125]

i have a crack in my bllock were the main bearing sits so thats why i was gunna put that in there until the cr125 motor is fixed i only want it for trails and stunts and i live in hamilton anyways in the city so i dont wanan have a big noisy 2 stroke to drive around for now

[sharpshot411]

well its a waste of money to put a 150 4 stroke motor in there and 4 strokes are actually louder. Its just that 2 strokes sound louder up close.

[eatmydirt85]

try a CRF230 motor... less power loss

[1983cr125]

im putting in an old vintage yamaha dt250 motor its a 1973 dt250 but all new bearings seals and gaskets i wanted a honda motor to put in but all well it will be alright cuz its got 21hp but im not sure how much torque. im running the cr125 sprocket so it should have lots of get up and go and a custom exhasut is being made for it as soon as i get it back from having the motor fitted.bikes gunna look like a new dt125 but alot more power and good for jumps and trails and hill climbs:)

[coolkid134134]

i did that to my xr 200. but it sounded my louder.

[Yamaha518mx]

it does mess your jetting up sooooo much, also its not good for your internals because the lack of backpressure will eventually fuck up your valves and rings.

[BurningTirez]

i dont think he was going to keep it like that... I did that before on an atv for a few runs around the yard and thats it. If you dont ride it for a long time it wont hurt it. it would take a while for it to fry something.

[96JUSTIN]

hahaha that was awesome...I got an old 84 xr250 and did the same thing lol it sounds hilarious

[ernestthecat66]

hahahhaha well ok this is my bike i was way to big for at this time and was jsut messin around and took the slip on off good god i sold the bike and it still runs till this day i dont understan yall i mena if u think its so bad dont watch it i just think its funny how that stupid people on here jsut get on here to bitch and shit yall r about a bunch of pussy but jsut shut up bout how its gonna blow up ill ly down any mount of money that yall dont even knoe nutin bout how a motor works

[flyingfuzzball]

ya know how much ur messin ur engine up. the carb is now gonna be jetting really lean totally messing every thing up. it will run hot.

[sutho24]

you do know that fucks your bike

[cmhdirtbikr]

hey what year is yours? i got a crf150r 2005 stock pipe, but im getting a new one fmf thats all i know right now

[bmxrider28]

dont get a custom pipe stock is the best for ur bike  if not they would put on fmf pc white bros n shit stay stock

[NFSGamerUSA]

WOW you're stupid...

[bmxrider28]

fuck u

[NFSGamerUSA]

Great comeback! You don't get an aftermarket pipe necessarily for sound, the main point is for more power and/or torque.

[paintthecopZ]

I have learned to not care about power. Id rater quiet my bike down so i can hear someone else. and at the point of 250/450 you dont need more balls unless your racing on a track or vs a friend.

[bmxrider28]

i got an 07 crf150r and stock sounds great

[ktmracer00]

ya they do my cusin got 1 and it sounds like my ktm 250

[bmxrider28]

250 four stroke rite if not im gonna say... lol

[eatmydirt85]

bull sit. If you ride dirt bikes why the hell are you named BMXRIDER?? You are probaly one of those gay kids who stays on the internet ALL DAY.

[bmxrider28]

shut the fuck up all i do is check my e mail once a week and if u have the fuckin time to comment me ur gay but i ride dirtbikes and bmx mainly bmx so u probably couldnt do that

[richiehubby]

wat has this got to do with a rev limiter?

[richiehubby]

people wine about load noice because people complain and get motocross tracks shut down n people like that riding in front of peoples houses does not help. i love load bikes i the right areas.

[akv133]

i'm so sick and tired of people complaining about loud pipes go fuck urselfs bunch of whinny bitches go watch horse racing if u don't like it.

[bigpeoplefilms]

Well i think that there is nothing wrong here i was there when he done this and only ran the bike with a slip on off and i really wanna knoe how it gives the sport a bad name i think that most of u all just dont know nutin bout a bike it was loud and if thats a problem then go ride skate boards or sumtin bunch of dumb asses

[richiehubby]

wat a twat people like u give the sport a bad name.

[DiRtDoG52]

he just wants to show off his bike is that a problem

[pooper7x]

sounds like but to me!

[drt9bike1racer]

u wont blow it up

it will just float the exast valves and wont evr seel again

[guns663]

year I pull 50 meter weel stans and it is on the rev limiter and it has not blowen up

[DEMONSPEEDIN]

why are 4 strokes so popular? a porperly built and tuned 2 leaves them in the dust >.<

[thor0mx]

Are we taking the same size of bike? Two totaly unalike engines...cannot compare them.

[DEMONSPEEDIN]

same size as in a yz125 and yz250f or yz250 and yz250f? because the 125 will smoke the 250f, if rode right

[hondaracer9551]

ilmao havent seen that yet

[elitesrus]

u r a fucking retard u will blow yo engin like that dumb ass

[crisisblacknwhite]

u ever heard of open headers?

[dannycolemen12]

the engine has a rev limiter dumbass you know nothing about dirkbikes

[apmoro]

how is he gunna blow his engine because he has no muffler. your a dipshit

[ddpmj]

it will either blow or die out

[ddpmj]

my cuzin did it to his bike well his little 100 its old ,and were both on the street ridin our dirtbikes cops came chasin us we had to hid in some woods a half mile away for about two hours then we got chased on the street by the cops and left them in the dust and made it home safe

[kidonthe300ex]

Sounds like a freakin truck

truck

[ddpmj]

i did that thing and i had the cops on me because i took the whole pipe off, and wouldnt that mess the engine up

[Towlieee]

haha all the people posting up about blowing it up are soo funny.

lemme guess, you all are named tina, you wear a pink dress, and you spend more time cleaning your bike then riding?

I leave my 150f on rev limiter daily lol, who cares, its a honda trail bikes. Chances are it wont blow up, and when it does, we rebuild it with better faster parts!

[Runescape1567]

GO! GO! GO! you tell them dumb asses yah!

[hondaracer9551]

damn right its a honda itll never die there bullet proof

[snowmobile2day]

HONDA ALL THE WAY!

[jordanburum]

at least its not a 150r.then u could give him shit.but its an f so its alread ya piece

[honcrf150]

i did that for a couple minuites one day and my neighbors wernt too happy

[herec0mestrouble]

ya dude theyre right. sounds sweet though. like my TTR90 with the powercore4. i have the same bike also...but, its a girl bike. hahaha. cuz im a girl. okkkk im gonna shut up now.

[thedisman]

good job runing a good bike there dude

[ernestthecat66]

u knoe both u bitches go fuck urself its my shit and i didnt uck it up i ride the damn thang every day nigger fuckers

[thedisman]

dude, i have the same fuckin bike its gona get fucked right up dude, u shal see and learn, bitch

[ernestthecat66]

god dang wat u dont understand is i put the slip on back on whenever we finshed recordin we jsut wanted too see what it sounded like

[fasterthanyou22]

I bet you cant wait to lean your motor out and melt the head, huh?

[IonPaintballer101]

how u make it sound like that?

[Drake730]

That is cool I want my bike to sound like that.

[ernestthecat66]

haha man its kool how it sounds but tis gets reall aggervatin after a while but a stock 450 sounds purty good hopefully i will get one this spring