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Wossner Pistons

Wossner 944S 2.5 Forged Piston Kit (K9531)

944S 2.5 Forged Piston Kit.

Manufacturer kit reference: K9531

Technical specifications

Engine Code M44/40
YOM From 1988
YOM To 1989
Bore Size 100.5mm – K9531D050 , 100mm – K9531DA , 101mm – K9531D100
Stroke 78.9mm
Compression Height 40.6mm
OEM Comp Ratio 10.2:1
Number of Rings 3
OEM Rod Length 0mm
Clip Part Number CW24
Pin Size 24mm
Pin Part Number WP137-SP
Cylinders 4
Valves Per Cylinder 4

Piston specifications by size

Piston reference Piston diameter Compression ratio Capacity
K9531DA 99.92mm 11.4:1 2478cc
K9531D050 100.42mm 11.4:1 2528cc
K9531D100 100.92mm 11.4:1 2503cc

Piston diameter and cylinder bore are different measurements. Select the correct size and confirm the engine specification before ordering.

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