Modern Vespa

I own a Vespa LX 125ie, and I would want to know if it possible to install the original Piaggio 150cc cylinder kit, if it is plug&play.
Sorry for my poor level of english.
Thanks in advance!.

Sorry not the answer you want was wondering the same think also will it make much difference to performance

25cc isn't much of a bump, if its a 2valve go with the malossi 190cc kit.

yeah the 190 kit is essentially a bolt-on for that bike. Do your research and watch: It helps a ton.

As above - install the Malossi 190 kit. Top it off with some Dr Pulley sliders and you're golden.

The 150cc top end should be plug and play, and if you get the Malossi, make sure you get the kit for the IE bike, otherwise the bike won't run right.

can this modification works on primavera 125 3v to 150 3v?

Hello again, could anybody tell me all the parts I need to buy for tbe 125 to 150cc conversion?.
My Vespa is the 125 ie 2 valve engine.
Thanks!!!.

Hi, I have a complete 150 barrel, piston and cylinder head which I removed to install the 190, it's off a low mileage motor if your interested

Hi
Do you still have it?
Thanks

Why not do it properly and use:

https://www.scooter-center.com/en/1844113/cylinder-piaggio-200-cc-piaggio-ac-leader
(I like to play with this one as it has slightly lower compression, but may run well with the injection set up as standard)

or

https://www.scooter-center.com/en/p1400215ie/cylinder-polini-198-cc-piaggio-ac-leader-ie-euro-3-injection-engine-incl.-polini-ecu-vespa-lx-125/150ie-euro-3-lxv-125ie-euro-3
(you can buy it without the ECU override)

as an alternative to the Malossi

https://www.scooter-center.com/en/m3111393/cylinder-malossi-190-cc-piaggio-ac-leader-carburetor-engine-vespa-et4-125/150-4t-lx-125/150-4t-s-125-4t-euro-3-m444m-s-150-4t-euro-3-piaggio-fly-125-4t-euro-2-3-m422m-fly-150-4t-euro-2-3-m422m-liberty-125-4t-euro-3-m389m-liberty

The 2 valve head is restrictive, you could just use the 125cc as is, put a less restrictive air filter in (mod the air box for flow), put an iridium spark plug in and as the o2 sensor is the 4 wire unit, use a fatduc unit to get it running a little better.

Much cheaper! But wouldn't you need the ECU to adjust the fuel?

The Malossi 190 kit has been the gold standard for upgrades to the 125/150 and has years of successful use. It's what I purchased for my LX150

I have Malossi 190cc kit installed last week on my LX125, drive and sounds great 😃👍

I did try two different carburettors Keihin CVK 26mm and CVK 27mm, looks like the bigger one works better, only with stock idle jet 42, while accelerating, engine stalled. Reduced to 40, than 38 and now at 35 seems to work the best. Main jet is stock 82, like on the 26mm carb.
At the begging I did try 7.4g rollers, than went back to stock 8.2, now I'm waiting for 8.7 and 10g to test. As the engine with 8.2 revs to high from start.

Update, did receive 8.7g and 10g, straight to 10g and this seems to suit me the most, I very happy with rpm from takin off 👍