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Racing Cylinder MALOSSI 187cc

incl. injection module for
Vespa LX i.e./LXV i.e./S i.e.
Leader 125cc 4-stroke AC i.e.
Ø 70mm, aluminium,
pin 15mm


The range of cylinders that MALOSSI have available for four-stroke Maxi scooters has, over the years, grown considerably. One of their main selling points has always been a long-lasting reliability in everyday use, despite their high power output. The reason for this is easily explained. The experience that MALOSSI gains on the racing scene results in prototype components being created with this knowledge. These items are then further tested, developed and perfected on the race circuit. This evolutionary process leads to the high quality of the tuning components they produce. In addition MALOSSI use the finest grade of materials and the very latest production techniques to ensure precise, minimal manufacturing tolerances with all of their products.


The increase in cubic capacity that the MALOSSI 187cc aluminium cylinder brings provides a welcome boost in power for the air-cooled PIAGGIO 125-150cc Leader motor.

The extra power available is especially noticeable while travelling with a pillion. The increased torque means hills, gradients and strong headwinds no longer represent a problem. When combined with a taller overall gear ratio higher top speeds can also be easily achieved.


This conversion kit is also compatible with the air cooled and fuel-injected Leader motors (badged as i.e.). A MALOSSI Forcemaster 2 fuel injection module is then also included to make this possible. This device provides four separate, pre-programmed ignition curves that can be chosen individually to match your style of riding or better serve the peripheral components in the overall set up of your motor. Every ignition and fuel-injection parameter can be independently programmed in its min / mid / max ranges by +/- 20% from the original settings. The original maximum rpm, which is normally governed by a rev limiter, is increased by 1000 rpm when the Forcemaster 2 device is used.


Aluminium / 60mm bore / four-stroke / AC

Aluminium cylinder with a chromed bore lining (piston clearance 0.05mm), increased cubic capacity, compression ratio : 1:11.5, 48.6mm stroke, original exhaust and carb compatible, forged aluminium piston with a high silicium proportion for added durability, optimised gas-flow properties and improved fuel economy, fuel-injected motors require the adjustable fuel-injection module.


SIP-TIP : In combination with a taller gearing and the MALOSSI Multivar 2000 variator unit you will have created a real wolf in sheep?s clothing!


SIP Community User "S125 Orange" (on #M3111393) :

"A power increase that you cannot ignore. This conversion really comes into its own when you are carrying a pillion."

OEM Numbers (for the purpose of comparison)  3114621 (MALOSSI)

Customers also searched for this article with:  race cylinder, performance cylinder, race cilinder, tuning cylinder, alluminium, ally, ally, aloy, alloy

Our Alternatives
for this item
PI827041 $169.02
PI831975 $163.54
J3904436 $1,157.55
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M6113027 $63.04
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M297042Y $7.16

1,822g / piece
Stock on hand  

Unfortunately we are not authorized to deliver MALOSSI parts to your country. We recommend you to take the suggested alternative.
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Spare Parts
fits on the following articles
divider Productname divider Art. No. divider Price divider Stock
Tuning Kit Complete "Sport Plus/High End" for Vespa LX i.e./LXV i.e./S J3904436 $1,157.55
icon scootermodels This product fits the following models
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA LX i.e. 125 ZAPM68100 4T AC `09-`11
VESPA LXV i.e. 125 ZAPM68102 4T AC `11
VESPA S i.e. 125 ZAPM68101 4T AC `09-

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