Malossi Racing Cylinder Kit 187 ccm – noticeably more pressure for your Piaggio Leader 125/150

With this Malossi Racing 187ccm cylinder kit, the larger 4-stroke scooters finally get the upgrade they deserve. Especially the rather "tame" factory models of the first automatic generation, such as the Vespa ET4 125 with the Piaggio Leader engine, benefit extremely: more displacement means more power, significantly stronger acceleration and noticeably more reserves – even on hills and with a passenger.

The 187ccm aluminum cylinder comes with a coated bore (similar to nickel-carbon-silicon). This makes it extremely durable and resistant. Malossi relies on very precise workmanship and high-quality materials here – the goal is not only performance, but also longevity.

In combination with a longer Malossi gear ratio, you can additionally convert the power increase into more top speed. Important: The carburetor should be retuned. The conversion to 187ccm is carried out without crankshaft modification, and the original cylinder head can continue to be used.

Perfect if you want to turn your Vespa ET4, Vespa LX or another scooter with a Piaggio Leader carburetor into a truly pleasant tourer – with more pull and everyday usability.

Features & Advantages

• 187 ccm Racing cylinder kit for 4-stroke Piaggio Leader engines (125/150)
• Aluminum cylinder with coated bore (similar to nickel-carbon-silicon)
• Extremely durable and resistant – focus on performance and longevity
• Significantly better acceleration and more power reserves (also on hills / with a passenger)
• Optional: More top speed possible with a longer Malossi gear ratio
• No crankshaft modification necessary for the 187ccm conversion
• Original head can continue to be used
• Tuning the carburetor recommended/necessary after the conversion

Technical Details

• Displacement: 187 ccm
• Cylinder Material: Aluminum
• Bore: coated (similar to nickel-carbon-silicon)
• Conversion: without crankshaft modification
• Cylinder Head: Original head continues to be usable
• Setup Note: Retune carburetor

Compatibility (Vehicles)

Fits many scooters with Piaggio Leader carburetor (125–150 ccm), e.g., Vespa ET4, Vespa LX and Piaggio Liberty – but also numerous other models.

• Vespa: ET4 125 Leader M19, ET4 150 / ET4 150 Leader, LX 125 (M441 M681), LX 150 (M44 M681), LXV 125 (M44301), LXV 150 (ZAPM44 2005–2009), S 125 (LXS), S 150 (M44 M681 2005–2010), LX 3V 150 (M684 2013), LX 125 3V Touring, LXV 150ie (ZAPM681 2010)
• Piaggio: Liberty 125 RST (1997), Liberty 150, Liberty 125 2V (M67), X8 150 (ZAPM492), X8 Street 125, Fly 125 (M421 M571), Fly 150, Zip 125, Zip II 125, Skipper ST 125 4-stroke, Skipper ST 150 4-stroke, Skipper 125 SKR, Skipper 150 SKR, Typhoon 125 2V (M70)
• Aprilia: Sportcity Cube 125, Sportcity One 125, SR Motard 125, Mojito 150, Mojito 125 (RY Piaggio Leader engine)
• Benelli: Adiva 125, Adiva 150
• Derbi: Sonar 125, Sonar 150, Variant Sport 125, Boulevard 125 (2003–2006), Boulevard 125 S (2007), Boulevard 150
• Italjet: Jet Set 125, Jet Set 150, Torpedo 125 (Piaggio engine 2007), Torpedo 150
• Renault: Fulltime 125

Why Malossi?

Malossi is a true traditional manufacturer in the scooter and tuning sector and is known for well-thought-out racing cylinders with high production quality. With this kit, you get exactly the mix of performance, precision and durability that a strong 4-stroke tourer needs.

OEM Number

• OEM No. (for comparison purposes): 3111393

Article Number: M3111393