It sounds like a 1,000cc sport twin that can rev to 14,000 rpm. This is the best development to hit the Japanese liter bikes since, well, the original R1 in 1998. Badass. Simply badass.

I just bought my 2009 RAVEN to-day and I WILL be adding this slip-on to it ASAP ! WOW !

When this bike gets up around 7-8k RPM's, it sounds like a very mean V8, but when it gets up around 10k and above, it sounds like nothing else in this world! The k9 R1 is so freakin badass!!!

Great Sound! Two brothers gives so much more of a deeper tone compared to other aftermarket companies.

I could put this on my ipod and listen to it all day. It does sound like a muscle car. Dyno numbers would be nice though.

Great bike, great sound, this machine is going to blow all the other japanese manufacturers away this year. GO YAMAHA!!!!!

damn that sound is awesome!!

Jesus, that things sounds beastly, I have an 04' with the M2 carbon exhaust, it sounds amazing, but this seems a little deeper. Very nice.

Damn that things sounds great

just an amazing bike, there is no words... Yamaha R1

i love the sound of that bike! mmm....great!

Nice Job. :)

This four cylinder will cure my addiction for v8s, sounds just like one. Yes, a Miata with one of these crossplane cranks would cure my Hemi addiction.

Not a Yamaha fan but that 09 R1 is something fucking special, don't care what the figures say in what mags, that thing is an animal! Lush note as well

Yes, just our dual slip-on system.

Manufacturer claimed horsepower numbers are usually measured at the crankshaft. Chassis dynos (which measure rear wheel horsepower) will always be lower because of drivetrain loss. So, all of the numbers are right, but the chassis dyno numbers are what's actually getting to the ground.

I have the Two Brothers and if thats all ya gonna add ya do not need a map ... it'll run just fine and no need to worry about over heatin' ... NOW ... since ya can't spend 2 grand on a full exhaust you CAN get the Two Bros and the LeoVince mid pipe and that'll run ya less then 1 grand ... it's what I done and I love it !

very nice bike! any more videos of this one? :)

How can only 1000cc sound so awesome.......!!

Music? I guess when you think about it that 2009 R1 with our pipes is some kind of amazing instrument.

The numbers are on our website.

its the new firing patern they have i believe thats giving it the new sound

you know... call me crazy, but it sounds like a REALLY bad-ass VFR800.. I mean REALLLLY bad ass. That R1 folks, is a GREAT sounding motorcycle !!

i like the old sound....

That bike is HOT

the idea is to do roll-on runs (the ones you see posted on websites for top hp numbers a lot) in whatever gear is closest to 1:1 ratio, which on bikes is 4th gear. not from idle, but just above, maybe 3.5k rpm.

More videos please!

How do you run a dyno? I know you take it from idle in 5th to red line and back down but I've seen others in diff gears and such, what's the pattern of it/ or the point?

what a fucking-powerful sound!!!!!

Either bike would be a blast, but the new R1 is suppose to be the best of the best

i wanna ask smth is the rear seat affected by the hotness of slip-on ??

Turn up your volume and hear for yourself. ;-)

@smokinseb We offer a variety of exhaust canister tip inserts that adjust the sound output level.

what kinda horse and torque these make? with the new crossplane

how many cycles do u do? and where can u go to do this?

EARGASM!!

how good does it sound and how loud is it.

how much for those?? gettin an R1 in Spring would love for it to sound like tht

Yes the rear of the bike does look rather short but it grows on ya ... I haven't been pulled yet for the sound BUT I have had several stare hard ... so I decided to put the silencers in :/

How many PS performance in the measurement in the wheel dyno?

what silencer did you use....?

Amazing vocals! Sounds like a muscle car in the lower RPM range....

these are just the slip-ons in the video?

Dude ... this is a 2009 Yamaha R-1 and the exhaust comes out under the seat from the factory ... the 2009 Yamaha R-6 comes out the side from the factory ;)

@jimothy1967 what do you mean by ONLY ?? cars usually starts with 1600 cc and this thing is 1000cc then look at the difference between their sizes.

question I am buying a bike and would like to know which is better R1 or GSX

well im sold.

Im still trying to figure out who to believe. Ive seen two brothers dyno and graves dyno saying the 09 R1 with their exhaust pushing a lil over 150hp, yet everything else i read on the R1 claims it to be stock 180hp

why does it seem like ur dyno is in ur living room? or somewhere in ur house?

Sounds like a fucking plane. Awesome!

what was the horsepower?

apologies.... the new CBR1000 has the exhaust on the side, i was thinking too much on my food when i wrote that

You know, how an engine makes its power does affect the dyno results. You may not believe this but I have seen engines that accelerate seconds faster through a gear but turn out lower numbers.

wow, unreal! From 0:00 to 0:05 sounds like a Corvette Z06 pulling...then of course it goes past 7K into stratospheric RPM's.

My 1000cc sport twin can rev to 12! But it only makes 105 HP. But i'm smart enough to know that 105hp is plenty for the street.

its the crossplane crankshaft

RPM24: My bone stock 2009 R1 made 163 to the tire on the dyno. Any 09 R1 that makes 146hp shows there is something wrong!

I'm a Honda guy myself, I have the VTR1000 SP2 (or RC51 depending on which country you are in)... I love the sound of the twins. However... This may be the bike that wins me back to the inline 4. I'm amazed at how good it sounds, just wish it didn't have the bug eyes...! Now... What can I sell to give me enough money to buy one?! Anyone want to buy one of my kids? :-)

actually the horse power is lower than the cbr 1000rr but I like the sound way better for this bike

its not a v8 engine. Its a crossplane crank 4 cylinder engine. The crossplane crank utilizes the same design as a 90 degree v8 engine.

Not a problem ... of the big 4 bike manufactures the Yamaha litre bike is the ONLY one that kept the exhaust under the seat ... Suzuki,Honda and Kawasaki all litre bikes are out the side ... I have the 2009 R-1 and this exhaust and it sounds just like ya hear ... BIG and BAD !

don't sell the RC... that's the best looking, sounding, and riding bike ever. I loved the RC51 when I had it and miss it every time I think about riding.

my ear just came

Good lord,that thing sounds like a big block at the beginning

@jimothy1967 only 1000cc ?/ thats pretty much for a motorbike

sounds like...a v twin! my hate affair with inline fours has finally ended! Hopefully the days of souless scream are over.

haha, almost identical to mine, except mines got akropovic full racing system, pricey, wish i had a two brothers set

1st few seconds sounds like a mean v8...

damn they do sound like a car!

yes because an r1 isn`t fast enough?

if i was there , i'll prank you & let the wheel touch a ground :)

that doesnt look like a 2009, pipes would've been on your right side, not under the seat, BUT then again, you could change it.

the exhaust on the outside is def. horrible looking, that's why I got love for the Y, they know what they're doing. The new r1 is real nice looking but it looks way too short, maybe i gotta take a closer look at them at the store, maybe ill like them. But i got a question, do you get pulled over alot? even when you're not speeding? i want the 04-07 r1 but the cops where i live are just too racist to let a brazilian guy go without some cuffs.

will be enough 600cc

it kinda sounds like a ducati. It doesn't sound like the old R1s anymore..

I'm regular...most of the time anyway.

if its your first bike dont get the r1 cuz i has 1000cc 250cc is recommended for "noobs" idk how many ccs the GSX but if its over 600 i dont recommend it as a first bike

sound like V8 thou..

"I heard Two Brothers were dynoing a nascar" "no wait they're dynoing an R1" :p Well, if they used crossplane years ago, and now went to regular, everyone would be like: "WOW WHAT A SOUND, CROSSPLANE IS LAME"

69elko is right. YZF R1 is the best bike to have if u're experience. hahah

lol You know whats funny? MCN tested the Yami the new Kawi and the new Honda. Guess which one was best of the 3? YAMAHA! Bube you fail. I own a yellow 09 R1, and raced all kinds of 1000cbr's I beat them STOCK, with all their mods. Bube, your exactly that. A BUBE.

I mean seriously, thats a lot of hp to over hype if its really not cranking that much

Its midrange is FUCKING ridiculiuos tho.... my cbr1000 i love it, but i rode my buddies 09 r1, and that things midrange is so fucking amazing!

Sorry - was that an R1? Or the sound of Armageddon?????

dude if you are beginner don't but 1000cc...

For fuck sake calm down! Anyway i ride a GSXR1000 k7 and love on track and road there's no shit superbike nowadays really it's just down to what YOU the owner likes.

teammates barely in the top ten huh? do you not know who rossis teammate is and that he finished 4th and if i remember correcly colin edwards was also inside the top ten at 7 and james toseland in his rookie season finished 11. thats all four yamaha gp riders . looks to me like they all almost finished inside the top ten on the crappy yamaha that happened to sweep the podium twice last year. did rossi take all three positions himself..

lamborghiniv12: couple of trackdays doesnt make a pro. do u even know how to set up a bike? i have one suggestion for u; stop reading dealership brochure, RIDE IT. u can't judge a R1 if the R1 rider was his/her 1st trackday.

anyone who thinks 5 or 10 hp are what make a bike fast either dont know a thing about SPORTBIKES, have never actuallr "ridden" one. if you use 1/4 mile ets to back up your opinion or reason for buying one bike over another i am ashamed that my interests are in the same sport.. btw. what has kawasaki done in any of the top level racing lately? the new r1 just got pole and won 1 of the 2 world superbike races this year, and moto gp? i guess the m1 has a bullshit crank and firing order .gimmick.