Two Stroke Motocross

Two Stroke Motocross Forum => Technical => Topic started by: dtha70 on March 06, 2011, 11:23:19 PM

Title: namura pistons
Post by: dtha70 on March 06, 2011, 11:23:19 PM
I live in AZ and nobody out here has ever heard of or carries namura pistons. Can someone point me to where I can get them? Its for an 04 RM 250.
Title: Re: namura pistons
Post by: factoryX on March 07, 2011, 12:20:46 AM
http://namura.com/contact.htm (http://namura.com/contact.htm)
Title: Re: namura pistons
Post by: Coop on March 07, 2011, 05:15:04 AM
I hear they are used a lot in Europe.
Title: Re: namura pistons
Post by: Watson777 on March 07, 2011, 09:56:59 AM
DO NOT RUN THEM!!!!!!! I put one in my YZ 250 when I rebuilt it. I had 4 hours on the motor and the piston exploded. The piston ended up having a clearance problem determined by Namura, however they were not willing to help me out because they said it was my fault for not checking. I had two other namura pistons sitting here so I checked the clearance on them and they were both wrong so I threw them away. The guys we complete assholes and basically called me stupid and told me I didn't know what I was doing. Said they have never had a single issue with a single piston so i researched it and found that a ton of people from bikes to snowmobiles to ATV's have had the issues.
Title: Re: namura pistons
Post by: Charles Owens on March 07, 2011, 11:39:12 AM
I wouldn't recommend them either.
Title: Re: namura pistons
Post by: TMKIWI on March 07, 2011, 11:51:49 AM
I have had good results with OEM Suzuki piston's.
Title: Re: namura pistons
Post by: eprovenzano on March 08, 2011, 05:33:13 AM
I'm using one in my son's quad (yes its a four stroke) based on the advise of the gentleman who is boring the cylinder.  He has used them for years, but only after he rebores the cylinder.  For my KTM 300,  I ponied up and purchased OEM.
Title: Re: namura pistons
Post by: MyckMcClung on March 08, 2011, 06:39:57 AM
I have never had problems with Wiseco
Title: Re: namura pistons
Post by: downonmonday on March 08, 2011, 08:16:03 AM
I had a Namura and before I installed it I measured the clearance and it was off. So, I sent it back. Some have good luck with them, but def. worth measuring the clearance. I see them all over E-Bay. I actually got mine off of E-Bay for super cheap.
Title: Re: namura pistons
Post by: topgearmx on March 08, 2011, 07:51:19 PM
I sell alot of namura pistons but tell everyone they must be changed a little before recommended stock piston service limit. If you are a mild rider they will last if you ride all out i would not run namura i would run a wiesco forged piston.  We sell wiseco pistons with a 10% discount to all tsm forum readers & members if you would like a price e-mail  topgearmx@yahoo.com
Title: Re: namura pistons
Post by: dtha70 on March 08, 2011, 10:38:00 PM
I sell alot of namura pistons but tell everyone they must be changed a little before recommended stock piston service limit. If you are a mild rider they will last if you ride all out i would not run namura i would run a wiesco forged piston.  We sell wiseco pistons with a 10% discount to all tsm forum readers & members if you would like a price e-mail  topgearmx@yahoo.com
my cost on a wiseco kit from WPS is $136. That's a complete topend gasket kit, wristpin bearing, wristpin, clips, rings and piston. If you can beat that shipped to my door then we'll talk
Title: Re: namura pistons
Post by: crf721jrm on April 28, 2011, 07:13:22 PM
Oops, I wish I would have seen this before I ordered mine. :o
Title: Re: namura pistons
Post by: downonmonday on May 02, 2011, 04:33:57 PM
I sell alot of namura pistons but tell everyone they must be changed a little before recommended stock piston service limit. If you are a mild rider they will last if you ride all out i would not run namura i would run a wiesco forged piston.  We sell wiseco pistons with a 10% discount to all tsm forum readers & members if you would like a price e-mail  topgearmx@yahoo.com
my cost on a wiseco kit from WPS is $136. That's a complete topend gasket kit, wristpin bearing, wristpin, clips, rings and piston. If you can beat that shipped to my door then we'll talk

$136, dang that is pretty cheap!
Title: Re: namura pistons
Post by: monsteryz125 on May 02, 2011, 06:09:42 PM
I get mine for $120 with a 20 minute drive of course thats for a 125, i dont know how much a 250 would be
Title: Re: namura pistons
Post by: George on May 03, 2011, 04:19:15 AM
My view is that the genuine piston is the one to go for, why skimp on something that important? Ive never heard of oem pistons being the wrong clearance or exploding, and if you think about what the piston is doing, why not put in the one thats designed to be there from the factory? Fair enough skimp and buy cheap plastics etc, but for the piston its best to get genuine stuff.
Title: Re: namura pistons
Post by: Dirt Addict on May 28, 2011, 07:14:42 AM
i tried going cheap with a namura in a rm125.  yup, it blew up  >:( . i bought it even after reading about others problems.  save yourself some money in the long run.  get an oem or a wiseco.....
Title: Re: namura pistons
Post by: scotty dog on June 16, 2011, 05:33:58 PM
I was lookin at gettin a Namura piston kit but i dont think i will now, will go for Wiseco for sure, anyone know where i can get a complete kit for a good price?
I live in Oz so will need someone who will ship it here..

Cheers Scotty  :D
Title: Re: namura pistons
Post by: monsteryz125 on June 16, 2011, 07:31:47 PM
Can you order one from their website and have it shipped?
Title: Re: namura pistons
Post by: TMKIWI on June 16, 2011, 10:07:21 PM
You should be able to get Wiseco pistons of the shelf in OZ Scotty.
Price up a Wossner as well. They are cheaper here then Wiseco's.
Title: Re: namura pistons
Post by: scotty dog on June 17, 2011, 08:26:04 AM
I've priced up Wiseco's off the shelf and theyre alot cheaper to get from the US off Ebay n stuff, will look into the wossner kits, thanks kiwi.
Glad i looked here before buyin coz i was gunna go with the Namura kit.... ???
Title: Re: namura pistons
Post by: maicoman009 on July 07, 2011, 11:13:19 PM
 I've always replaced my old pistons with Wiseco's & they've lasted me a very long time! The only other brand I would reccomend is Wossner or a oem stock piston. You can't go wrong with any of those choices............ ;)