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Wossner Pistons

Wossner 275GTB-4 3.3 V12High Comp Forged Piston Kit (K9003)

275GTB-4 3.3 V12High Comp Forged Piston Kit.

Manufacturer kit reference: K9003

Technical specifications

YOM From 1964
YOM To 1966
Bore Size 77.5mm – K9003D050 , 77mm – K9003DA , 78mm – K9003D100
Stroke 58.8mm
Compression Height 28mm
OEM Compression Ratio 9.2:1
Number of Rings 3
OEM Rod Length 112mm
Clip Part Number CW17
Pin Size 17mm
Pin Part Number WP090
Cylinders 12
Valves Per Cylinder 2

Piston specifications by size

Piston reference Piston diameter Compression ratio Capacity
K9003DA 76.93mm 10.5:1 3285cc
K9003D050 77.43mm 10.62:1 3327cc
K9003D100 77.93mm 10.75:1 3370cc

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

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