Peak Performance Heads

[Coles_55]

Looking to buy one, but would like to get as much information on them as possible. So I am looking to you guys for help, I tried to find their website but no luck. So any info would be great!

 

[mrviper700]

they are listed on mountainperformance.com

 

[yamyrider]

what kind of gains can you expect with these heads

 

[Sxr700Bandit]

the company that produces the heads, is called Western Machine, they usu have an ad in the sno mo mags, also.

 

[Coles_55]

Looking to gain some hp's. Are they worth the price or no??

 

[Sxr700Bandit]

I put one on my sled a couple of years ago and havent rode it yet to know. I did notice the difference in the way the power hit when I took it for a ride across the yard. Think of it this way anytime that you add compression you will make more horsepower, and along with the HP comes heat, so you may end up adding a bigger cooler to help keep the light off.

Hey Coles can you do me a favor and take a picture of your rear cooler? and post it here. Thanks, T

 

[Coles_55]

Will do, probably wont be until Weds or maybe tomorrow if I can get at the sled.

 

[Sxr700Bandit]

Peaks phone number is (970) 240-4233

 

[shavedheadedyamaha]

for a triple you just get 3? will they work if your heads have been shaved already or is that all they are?

 

[Sxr700Bandit]

Similar to shaved heads. Usually the combustion chamber is machined to a smaller cc size, thus raising the compression.
By shaving the heads you actually make the squish area tighter to the piston possibly causing detonation by removing to much material and making the squish band to tight.

 

[chips1969camaro]

just be careful on what heads to purchase..ask the salesman what fuel you are to use with the head that you would be purchasing.this is usually a problem with people that buy aftermarket cylinder heads, not knowing that a good quality pump gas or race fuel needs to be used....chip.