Malossi 177cc CVF2 aluminium sport cylinder kit for Vespa PX125 scooters without electric start.

Malossi have designed this cylinder from the ground up. The aluminium alloy cylinder has been cast into an aerodynamic profile making for efficient cooling and better control of the intake temperature, the hemispheric cylinder head also offers 10% extra cooling with the resigned fins vs straight fins.

Inside the cylinder are now 7 ports (4x transfer + 3x boost ports) offering the best flow characteristics and the exhaust port which has been redesigned with a 37mm flange to avoid leakage.

Malossi specifications:
Stroke: 57mm
Bore: 63mm
Gudgeon Pin: 15mm
Compression ratio: 1:10.8
Piston rings: x2
Recommended carburettor: Dellorto VHST 28mm
Recommended spark plug: NGK BR9E

Jetting kit for SI 20.20 carb included (not pictured)

A high flow fuel tap is required with this cylinder kit.

Malossi 3118005