has anyone put one on there bike? ... and what do u think about them? thanks

i think there a pretty good set up i got a 07 crank and the 470 big bore kit has alot of power and pulls quite well :)

i picked up the big bore kit from esr directly i went to his shop the kit came with a wiseco 97mm 13:5.1 piston made for esr. but i dont know i hear bad things about wiseco pistons ....i hear that the cp is better but oppinions are like w00ters everyones got one...im just gonna try it out if it f---s up tom at esr said they stand by there products so we'll see....any imput is good..anyone?

i've ridden and raced a couple of the quads with their old 460cc kit and was not impressed at all. my piped and filtered yfz was eating them up. My quad definitely ran better, considering i was able to get seat time on my quad and the esr one in the same ride. Not sure on the 470 kit though. It's too bad becasue i am an ESR fan.

Yeah the fact that their bikes had an increased displacement explains why you beat them

Wiesco Piston's are going to be harder on the cylinder walls than a CP would be plus the CP has a better design for both longevity through structural integrity and oiling properties

Yeah, becasue that is what i said Maybe you should read the post first. He asked for an opinion, i gave one on the limited experience i have had with the ESR kits. That reading thing, it's hard.

you shoulda bought my athena and rpa piston instead!!!

Yeah you are displaying its difficulty quite eloquently.

You said you were disappointed with the 460 kit because you beat some bikes with it. Really? Should I be disappointed in the stock cylinder because I beat a stock bike? Or should I be disappointed in Venom heads and nmotion cylinders and dasa pipes because I've beaten bikes with them? And since when has changing a cylinder ever increased power? Sure a new cylinder compared to a worn or cylinder could.

Beyond performance in the gained 10cc's of the 460 kit the benefits are in durability (or at least they should be). Increasing displacement is never bad for performance and I would never be disappointed in gained CC's because ESR cc's are the same as Athena cc's or Maxpower cc's or nmotion cc's. The differences are negligible if any and the price difference lies in the durability, construction, promotion, and name.

You sure about being disappointed in the cylinder?

There you go again, magically making up words that were never said. You my friend are truly amazing. Please, old wise one, point to my first comment where I said "their increased displacement explains why i beat them." And then i would appreciate it if you would point to my second post where i said, "I am dissapointed in the cylinders." Now, if you pay attention really hard to my original post, and like i said, i know that's EXTREMELY difficult for you, i said that i have beat multiple bikes with that kit AND that i have personally had seat time on them. But wholly smokes, you are truly amazing, being able to decipher everything you said from those few sentences. What are you doing here on this website, you should be running for presidency or something. Go ahead, I'm sure you will make up something i said again.

Its really cute when people try to sound smart. You failed btw
Oh and you said you were disappointed with the 460 kit because you beat a few of them. Well guess where the performance benefit of that kit comes from? The increased displacement. You lose.
I'm not going to continue this with such a person.

No i don't lose, you do. please go back to my first post, the very first sentence and READ. i said i have ridden them. I have personally rode them. From one little sentence after that saying that i beat them with my quad you were able to fabricate phantom arguments. the VERY FIRST SENTENCE, please read it to me and and tell me what it says. Anybody that can read and comprehend, can see that the basis for my argument was that i have ridden multiple quads with the ESR 460cc kit. For your own sake put the dunce hat on and just quit already.

Awww... Not only can he not read, but he can't even read what he wrote! It doesn't matter if you rode one or raced one. You can't be unimpressed with a big bore kit for any reason other than durability, fit & finish, or appearance. Why? A cc is a cc. Do you just not get this? Are you that closed?

dunce

No, a cc is not a cc. by your theory a raptor would absolutely demolish aa yfz450. And with big bore kits there are other things than just a cc. bore/hone job done on the cylinder, the style and design of the piston, etc. i'm done arguing with you. Any reasonable person could see what i meant, but your an 18 year old kid who thinks that he knows everything, and loves to be a smart a$$ any chance you get. I stand by my original statement, from my personal experience actually riding multiple quads with ESR 460cc kit, i was not impressed. The 470cc kit may rock, i don't know have not been on one. I'm sure you are going to take that statement and transfer it into me thinking the jug is junk, and the piston sucks and a cc is not a cc, etc. etc. You are a joke and not worth anymore of my time.


07yfz450 rider: I just noticed you are from Tulare also. We need to get together and ride sometime. Me and a few of my buddies mught go ride teh Porterville track in a few weeks.

Yeah comparing a Raptor 700 to a yfz 450 is such an awesome comparison. Wait... Oh yeah I forgot everything about those two motors are different not just the cylinder. Guess it was terrible... And if you look back at my previous posts, you'll see I said new versus worn cylinders which encompasses honing differences, and to bring bore differences into it is pure foolishness. As for the piston, Wiesco's may not be the choice for most builds but the performance of a shelf Wiesco compared to a shelf CP is close enough to call the differences negligible. The 470 kit wouldn't do much in any over the 460 than the 460 does over a 450. Why? 10cc's are 10cc's. Sure there is a point of diminishing returns based off head designs, but for the sake of argument the difference is negligible.

So what did you not like about it from riding one and racing against a few? Was it the ESR kit or the fact that the gains from 10cc's are maybe a few HP? And can carb tuning and rider skill not make up for those few hp? Just a thought. Oh and I'm not your friend... I like people who can think... Just a thought...

Your attempts to turn this error into me being cocky are quite amusing. And if you actually had such a vast amount of experience you would agree with what I've said. If you think another 460 kit is going to give any significant gain over the ESR kit then I hate to tell you but recess is over.

god damn thats a lot of post thanks for all the help....

You should be fine performance wise if that helps

you should buy my kit and make more power than that esr kit

Yeah buy a nice worn out used kit over a new one

NA ILL STAY WITH THE ESR I RUN ALL HIS PARTS SO ILL STAY WITH IT...YEAH AND I DONT BUY USED w00ter MAN I STICK WITH THE NEW w00ter EVEN IF ITS NOT AS GOOD AS YOURS IM NOT TRYING TO BE THE BEST I JUST WANT A DECENT BIKE ..U KNOW WHAT I MEAN

my kits worn out? i think your smokeing some good w00ter brutha!

i understand... to each his own

No harm meant man, just tired of seeing you post that all over the place lol

just trying to move parts!! sad thing is im looseing money on them and never got a chance to use any of it!

what the hell is your picture of man? i am tired of seeing it posted in every thread. this isn't yfzsoftporn.

soft porn? whats wrong? You afraid of a man in a thong?

tell me thats not you in the thong grinding on that kids leg!

Yes, quite afraid.

with that picture? everything! and yes i am afraid!

Are you 5 ?

do you rub one out to that picture?

Haha thats the point of the picture. Its so funny... Guy in a tarzan thong party boying on a cowboy? Classic... Gotta love halloween

Not that you has many cool points to begin with, but you just lost the rest of them!!!

Haha damn that makes me so sad... Wait... Nope anyone who refers to someone as having "cool points" doesn't matter. Oh and if only you knew...

this is from may of 2009............... you=epic fail