Ø39.90 mm cast iron piston cylinder Derbi Euro 3, Euro 4 Airsal 50

Upper engine Airsal Derbi Euro 3 and Euro 4

Piston kit new complete adaptable for motorcycle 50cc Derbi, Gilera, Aprilia... with motor Derbi Euro 3 and Euro 4 since 2006. Also remember to replace the needle cage piston pin which is not supplied in the high engine kits (this bearing is sold separately) and to provide the gasket probe adapter Euro 3 vers Euro 4 for mounting on models after 2018.

This piston cylinder block kit includes

• 1 x cylinder block
• 1 x piston
• 1 x cylinder head
• 1 x set of seals
• 2 x piston rings
• 2 x circlips
• 1 x gudgeon pin
• 1 x temperature probe adapter

Technical characteristics and dimensions of the cylinder block kit

• Mark: Airsal
• Cylinder color: gray
• Cylinder block material: cast iron
• Piston diameter: 39.90 mm
• Piston pin diameter: 12 mm
• Cylinder fixing center distance: 52 mm
• Thread diameter of the probe on the cylinder head (Euro 3): 14 mm
• No threading: 1.50
• Diameter thread connection for probe (Euro 4): 12 mm
• No threading: 1.50