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    MALOSSI - Cast-i-cylinder kit ø 55

MALOSSI - Cast-i-cylinder kit ø 55

31 8691
€191.07
€162.41 Save 15%
Handling 4-5 days

Cylinder Material: special self-lubricating, wear-resistant, highly refined cast iron alloys, obtained by Shell Moulding gravity die-casting. Machining: on numerically controlled high precision machine tools. Recalculated and increased heat exchange surfaces. Exhaust and transfer ports designed and tuned for maximum thermodynamic performance. Dimensional and surface finish quality control performed according to Malossi's internal specifications. Cylinder and piston selected for a 100% fit of 0.010-0.005 mm. Checking of all the seals carried out. Piston Material: special aluminium alloy with…

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This product is indicated as universal, it may not be compatible with your motorcycle.
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Cylinder

  • Material: special self-lubricating, wear-resistant, highly refined cast iron alloys, obtained by Shell Moulding gravity die-casting.
  • Machining: on numerically controlled high precision machine tools.
  • Recalculated and increased heat exchange surfaces.
  • Exhaust and transfer ports designed and tuned for maximum thermodynamic performance.
  • Dimensional and surface finish quality control performed according to Malossi's internal specifications.
  • Cylinder and piston selected for a 100% fit of 0.010-0.005 mm.
  • Checking of all the seals carried out.

Piston

  • Material: special aluminium alloy with high silicon content and low thermal expansion.
  • Machining: on numerically controlled machine tools.
  • Lightened and strengthened.
  • Heat exchange surfaces increased.

Piston rings

  • Piston rings in very strong modular cast iron with ground, wear-resistant.

Head

  • Material: special die-cast aluminium alloy.
  • Geometry of heat exchange surfaces recalculated and increased.
  • Machining: numerically controlled high precision machines with diamond tools.
  • Surface rust prevention treatment.
  • Viton Head Gasket.
  • Hemispheric combustion chamber with centred squish and spark plug.

Article

31 7903

Ø 47 mm

31 8691

Ø 55 mm

Capacity

74,60 102,16

Use

Urban / Sport Urban / Sport

Power range

6/8 8/10

Level of elaboration

easy easy

Carburettor recommended

Shb 16 - shb 19 Shbc 20 - phbl 25

Stroke

43 43

Compression ratio

12,5:1 11,8:1

Piston rings

2 2

N. of transferts

6 6

Head

Hemispherical Hemispherical

Spark plug

Central iw f 24 Central iw f 24

Piston

alluminium alloy 21% alluminium alloy 21%

Products reserved exclusively for racing in specifically designed locations according to the provisions of the competent sporting authorities. We disclaim all liability for improper use

Documents and videos

Vehicle compatibility (9 vehicles)

Piaggio(4)
  • APE 50 2T ←1989
  • APE FL 50 2T 1989→1990
  • APE FL2 50 2T 1990→1995
  • APE FL3 50 2T 1996→1999
Vespa(5)
  • PK 50 2T
  • PK FL 50 2T
  • PK HP FL 50 2T
  • PK XL 50 2T
  • SPECIAL 50
31 8691

Data sheet

Country of origin
Italy
Vehicle brand
Piaggio
Vespa
Vehicle
Piaggio APE 50 2T ←1989
Piaggio APE FL2 50 2T 1990→1995
Piaggio APE FL3 50 2T 1996→1999
Piaggio APE FL 50 2T 1989→1990
Vespa PK 50 2T
Vespa PK FL 50 2T
Vespa PK HP FL 50 2T
Vespa PK XL 50 2T
Vespa SPECIAL 50

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