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View Full Version : What Piston to run???


Shocka400ex
06-20-2005, 03:08 PM
I have been running my bike hard now for about a year and I have decided to put a new Top end on my bike just Because. I don't want a high compression piston because I have heard bad things and I just want to keep it pretty much stock. Should I
A. Buy a GYTR Piston rings and seals
B. Just buy new rings seals and keep the stock piston
C. Buy a different Piston like a JE...???
Your opinions are appreciated!
effective
06-21-2005, 12:04 AM
I would go with "A", replace the piston,rings and seals.
daddio
06-21-2005, 06:41 AM
our JE piston just broke and I know of 2 others thad did also. I would go with a 12:1 Wiseco.
Shocka400ex
06-21-2005, 09:50 AM
I have heard the JE pistons break. I am either going to buy GYTR or Wiseco. Is 12:1 stock??
daddio
06-21-2005, 09:55 AM
Originally posted by Shocka400ex
I have heard the JE pistons break. I am either going to buy GYTR or Wiseco. Is 12:1 stock??

YES
Lokiyfz450
06-21-2005, 10:50 AM
JE makes pistons for GYT-R.
400exrider36
06-21-2005, 11:55 AM
go with wiseco!!!:D
EvilJester400EX
06-21-2005, 11:55 AM
I have had my GYT-R in for a year (oh yeah, definitely time for a rebuild) and I haven't had any problems at all.
Warnerade
06-21-2005, 12:24 PM
Originally posted by 400exrider36
go with wiseco!!!:D wiseco sucks:ermm:
Shocka400ex
06-21-2005, 01:55 PM
Why or why not should I go with Wiseco?
I'm leaning more toward playing it safe and just buying the GYT-R but I would like to here a couple of opinions please other then the piston sucks. And I'm not asking how it performs in anything other then the YFZ. Thanks
EvilJester400EX
06-21-2005, 03:43 PM
When I installed my GYT-R I noticed a gain in power, it seemed more snappy and a little torquey, lost a little of the rev ability, but nothing noticeable. Don't expect it to be a brand new machine, it'll just be snappier.
400exrider36
06-21-2005, 03:45 PM
Originally posted by NacsRacer027
wiseco sucks:ermm:
sorry, ive just had good luck with them..
Shocka400ex
06-22-2005, 08:55 AM
Thanks Guys.
I think I'm going with teh GYT-R to freshen it up a bit.
PurePerformance
06-23-2005, 08:39 AM
I would reccomend using the Wicked Pistons by CP Pistons.

They can be seen here http://www.wickedmotorsportsusa.com/

Contact the guy and inquire him about the Wicked Pistons. These pistons were custom built by the specs of fellow YFZ drag racers (YFZtech) by CP Pistons. They have pages and pages of results in their site and it has shown as much top speed as a 460 up a hill. (Same bike, chassis, gearing and tires.)

49mph is what they got.