Wössner forged piston- and ringkit K9506DA-6
engine displacement. 2979cc
Manufacturer	BMW
Kit Part Number	K9506-6
Engine Code	N55, S55
YOM From	2010-
Piston number	K9506-6
Bore Size	84.5mm – K9506D050-6, 84mm – K9506DA-6
Stroke	86.9mm
Compression Height 32.5mm
OEM Comp Ratio	10.0:1 – S55, 11.0:1 – N55
Number of Rings	3
OEM Rod Length	144.35mm
Clip Part Number CW22
Pin Size 22mm
Pin Part Number	WP136-SP
Cylinders 6
Valves Per Cylinder 4
Wössner is the innovative specialists for high performance pistons 
and conrods. Wössner products are to be found in engines operating at 
the highest levels of motor sport, in competition and, of course, in 
everyday use – in fact, anywhere where longevity
and operational noise are important factors.
Wössner
 products are the source of the superior power behind the success of 
well known motor sport teams at national and international race meets.
The images are showing the AZPK9120D050 kit!
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