Airsal Sport 70cc 48mm Cylinder Kit – Derbi / Gilera D50B0 (from 2006) – Aluminium LC

The Airsal / Eurokit Sport 70cc cylinder kit is a popular aluminium upgrade for Derbi and Gilera manual models equipped with the D50B0 50cc 2-stroke engine (from 2006, Euro 3 / 4).

With a 48mm bore, this cylinder offers approximately 72–73cc displacement. Due to its moderate port timing, it delivers a smooth torque curve and a wide usable rev range, making it ideal for sporty everyday use.

Manufactured from aluminium for excellent heat dissipation and reliability. Features 5 transfer ports and a split (butterfly) exhaust port for improved gas flow and performance.

Can be used with the original exhaust, but for optimal performance a sport exhaust and at least a 19mm carburetor are recommended.

Note: 48mm bore (approx. 73cc) – not street legal where 50cc limit applies.

Supplied including:

• 48mm aluminium cylinder
• 1-ring piston
• Aluminium cylinder head
• Gasket set

Spare parts:

Piston:

Airsal Derbi 2006 48mm Piston

Piston ring:

Airsal 48mm Piston Ring

Gasket set:

Airsal Derbi 2006 70cc 48mm Gasket Set