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1967 R502
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Joined: 01/25/2018
Posts: 82

I noticed that there are sellers on eBay and elsewhere selling replacement oversized pistons that are not from Mahle or Kolbenschmidt. Anyone had any experience with these new pistons?

Twocams
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VBMWMO #8750
Joined: 03/16/2014
Posts: 699
I have read some unpleasant

I have read some unpleasant stories about pistons on the old air heads. I wont skimp in that area.

twocams

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Twocams
69 R69S 03 K1200GT
92 R100RT

Micha
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Joined: 10/12/2007
Posts: 285
Are there any modern

Are there any modern equivalents? Let's say from a more modern motorcycle or car?
I once heard, years ago, that there are Fiat pistons that can fit to the R51, unfortunately I can not remember what kind.

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Michael Steinmann
R51/3 1952
Engine Nr. 529466

1967 R502
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Joined: 01/25/2018
Posts: 82
Hi MichaI doubt there are

Hi Micha

I doubt there are any modern OEM equivalents, Fiat or otherwise. Just about ALL modern cars have 4-valve cylinder heads meaning that the pistons would also have pockets for 4 valves. Of course all of these old BMWs are 2 valves.

My initial question referred to some be reproduction pistons, not to substitutes from other OEMs. Sorry for the confusion.

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