Author Topic: namura pistons  (Read 7765 times)

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Offline dtha70

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namura pistons
« 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.

Offline FactoryX

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Re: namura pistons
« Reply #1 on: March 07, 2011, 12:20:46 AM »

Offline Coop

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Re: namura pistons
« Reply #2 on: March 07, 2011, 05:15:04 AM »
I hear they are used a lot in Europe.
1982 Suzuki PE175
Acme, Pa

Offline Watson777

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Re: namura pistons
« Reply #3 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 ****s 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.

Offline Charles Owens

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Re: namura pistons
« Reply #4 on: March 07, 2011, 11:39:12 AM »
I wouldn't recommend them either.

Offline TMKIWI

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Re: namura pistons
« Reply #5 on: March 07, 2011, 11:51:49 AM »
I have had good results with OEM Suzuki piston's.
If you don't fall off you are not going hard enough

Offline eprovenzano

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Re: namura pistons
« Reply #6 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.
Eric Provenzano
2001 KTM 380 EXC (mine)
2000 KTM 300 EXC (son's)
2006 KTM 250SXF SOLD!!!
1999 Honda 400 EX traded for a 2006 KTM 250 SXF
Sold 1999 KX250
Sold 1999 YZ125 (son's)
Sold 2001 Yamaha TTL 125 (son's 1st bike)
Sold but never forgotten 1974 Honda Elsinore CR250M
Sold 1974 Honda Elsinore CR12

Offline MyckMcClung

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Re: namura pistons
« Reply #7 on: March 08, 2011, 06:39:57 AM »
I have never had problems with Wiseco
If a pair of 2" brass balls isn't working, I doubt that the 3" model will make much difference.

Offline downonmonday

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Re: namura pistons
« Reply #8 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.
2000 Honda CR 250, 2004 Suzuki GSXR 750, 2008 Dodge Ram Mega Cab

Offline topgearmx

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Re: namura pistons
« Reply #9 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

Offline dtha70

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Re: namura pistons
« Reply #10 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

Offline crf721jrm

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Re: namura pistons
« Reply #11 on: April 28, 2011, 06:13:22 PM »
Oops, I wish I would have seen this before I ordered mine. :o
CRF450-------CR250

Offline downonmonday

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Re: namura pistons
« Reply #12 on: May 02, 2011, 03:33:57 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!
2000 Honda CR 250, 2004 Suzuki GSXR 750, 2008 Dodge Ram Mega Cab

Offline monsteryz125

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Re: namura pistons
« Reply #13 on: May 02, 2011, 05:09:42 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
2000 yz125

Offline George

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Re: namura pistons
« Reply #14 on: May 03, 2011, 03:19:15 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.