Malossi cylinder kit fits ET4 150, LX150, and other scooters with the Piaggio Leader 125-150cc engine.
TECHNICAL FEATURES:
Cylinder
 - Material: primary aluminium alloy with a high content of hardened and tempered silicon, cylinder liner with silicon carbide coating in a galvanic nickel die and crossed smoothing with two diamond passages with very limited tolerances.
 - Machining: on machine tools with high precision numerical control.
 - Cylinder-piston connection with an allowance of 0.05 mm.
 - Recalculated and upgraded heat exchange surfaces.
Piston
 - Ultra compact with 3 rings.
 - Material: special aluminium alloy with high silicon content, low thermal expansion and a tin facing on the sliding surfaces.
 - Machining on machine tools with numerical control. - Lightened and reinforced.
- Upgraded heat exchange surfaces.
Piston rings
 - Special rings with high sliding ease and very high mechanical resistance. 
 - I° ring compression in nitrided and chromium steel.
 - II° special cast iron ring. 
- Three-piece scraper ring made of chromium-plated special steel
Replacement pistons are available here.
Replacement rings are available here.
Not legal for use in California on pollution controlled vehicles.  Check local laws before installing.