Malossi Big Bore Cylinder Kit with CDI for Aprilia SR50  Di-tech with Piaggio Engine. The Di-tech with Piaggio engine has two bolts holding the intake manifold onto the engine. The Morini engine uses four. Comes with a CDI that is remapped for maximum performance.

Malossi, whose expertise in balancing a vast experience with the latest technology, embraced this new challenge: to bring to the racetrack a fuel injected two stroke engine.
With the new INJECTION TECH range of products a new chapter is written, an answer, the racing world was anticipating, to satisfy the growing number of Malossi Trophy Races for 70cc scooters. PI3112044 M3112044

 CYLINDER - Technology
- 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 heat exchange surfaces.
- Exhaust and transfer ports designed and tested for maximum thermodynamic performance.
- Shape and surface texture dimensional checks.
- 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
- Rings in very strong modular cast iron with ground, wear-resistant, hard chrome metal-spray coating on the contact surface.

HEAD
- Material: special die-cast aluminium alloy.
- Geometry of heat exchange surfaces recalculated and increased (air-cooled models).
- Cooling circuit sections and paths recalculated and resized (liquid-cooled models).
- Machining: numerically controlled high precision machines with diamond tools.
- Surface rust prevention treatment.

NOTICE:
FOR THE PROPER WORKING OF THE KIT IT IS ABSOLUTELY NECESSARY TO USE THE CDI UNIT IN THE KIT.

Please see our shipping and returns policy. This item may not be returned.