Used in my car for around 13k miles. They are 87mm, and are made for a S52. I bought them new from Top End performance in late 2003. Here is the thread from the original build.

http://forums.bimmerforums.com/forum/showthread.php?s=&postid=1757994

The pistons are in great shape, but they will need new rings to fit your motor. I have the motor just sitting here with the pistons and I might as well give them to someone that can use them.


*edit*
$450 OBO.

Price reduced, $450!

....and for only $125 more you can get my balanced S52 rods.

Are these what you had in the car making 500+whp..

How much boost have they seen...

I'm intrested just need to find out some details...

any pictures of the skirts to show wear?

And were they the high silicone content pistons? AKA less piston slap at idle..

Are these what you had in the car making 500+whp..

How much boost have they seen...

I'm intrested just need to find out some details...

any pictures of the skirts to show wear?

And were they the high silicone content pistons? AKA less piston slap at idle..

Yes, these are the same pistons that were in my car.

They have seen about 17-18psi max, never any detonation and never run lean.

Not sure if they are the high silicon content pistons, but I never had any piston slap.

I will try to get some pics of the skirts up in the next day or so....

Before I removed the motor, I was getting 155 (+-4psi) of compression.


Just measured all the pistons, they are at between 3.3985 and 3.399" at the skirt, so they are all very consistent.

Pics are up, I will post more when I get them cleaned up.

http://i7.tinypic.com/62h7d76.jpg

http://i7.tinypic.com/6btnr5g.jpg

http://i4.tinypic.com/63j3vxl.jpg

http://i5.tinypic.com/6conx8y.jpg

Are these what you had in the car making 500+whp..

How much boost have they seen...

I'm intrested just need to find out some details...

any pictures of the skirts to show wear?

And were they the high silicone content pistons? AKA less piston slap at idle..

je typicaly contains a higher silicone content in their pistons then say, CP. doesnt mean they are bad at all. just across the board the have a high silicone content.