Wössner Forged Piston Kit

Wössner K9569DA forged high compression piston kit. 

Fits:
Porsche 986 Boxster 2.7ltr - 2003 to 2004
Porsche 987 Boxster 2.7ltr - 2005 to 2008
Porsche 987 Cayman 2.7ltr - 2006 to 2008

Please note, pistons not suitable for Alusil coated bores
Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wossner's latest catalogue:

Part Number: K9569DA

Oversize: 0.0mm (Standard)
Engine Type: M96.20 / M96.25 / M97.20
Piston Size: 85.42mm
OE Bore Size: 85.5mm
Stroke: 78mm
Wössner Comp Ratio: 11.0:1
Compression Height: 32.3mm
Ring Part Number: 855XPY
Number of Cylinders: 6

Please CLICK HERE for Technical release – Piston / Con rod
orientation.

Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.

Price shown is for complete engine set.

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Wössner forged  piston kit. 



Fits:
Porsche 987 Cayman 3.4ltr - 2006 to 2008

Please note, pistons not suitable for Alusil or Lokasil coated bores.

This kit is fine for Nikasil liners

Specification
Technical information is sourced from Wössner's latest catalogue:

Part Number: K9741
Engine Type: M97.21
OE Bore Size: 96.00mm

Bore Sizes Available:
- 96.00mm - 3387.49cc, Compression Ratio: 11.3:1
- 96.50mm - 3422.87cc, Compression Ratio: 11.4:1
- 97.00mm - 3458.43cc, Compression Ratio: 11.3:1

Bore Size 96.00mm
Piston Size: 95.93mm
Over Size: 0mm
Displacement CC: 3387cc
Dome / Bowl Volume: -10cc
Wössner Comp Ratio: 11.1:1
Ring Part Number: 960XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores

Bore Size 96.50mm
Piston Size: 96.43mm
Over Size: 0.5mm
Displacement CC: 3422cc
Dome / Bowl Volume: -10cc
Wössner Comp Ratio: 11.2:1
Ring Part Number: 965XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores

Bore Size 97.00mm
Piston Size: 96.93mm
Over Size: 1mm
Displacement CC: 3458cc
Dome / Bowl Volume: -10ccmm
Wössner Comp Ratio: 
Ring Part Number: 970XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores

Standard
Stroke: 78mm
OE Comp. Ratio: 11:1
Comp. Height: 32.3mm
Valves Per Cylinder: 4
Cylinders: 6

Please CLICK HERE for Technical release – Piston / Con rod orientation.

Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.

Price shown is for complete engine set.