This expansion was created and designed to get the best out of the M1 and M1L cylinders of the Quattrini house, but it is also excellent for other cylinders with comparable timing and displacements. To improve the flow of exhaust gases, it has been designed to go around the rear shock absorber of the Vespa, thus having a much smoother curve than the classic expansions for smallframe.

For mounting on ET3 and Primavera requires the elimination of the drawer.

If mounted on a piaggio casing it requires the removal of a part of the air cooling conveyor nut in the upper part of the flywheel side casing.

Delivered complete with silencer and the necessary for assembly. unpainted.

For those who know Max, he knows that in his work he puts a constant commitment to continuously renew himself to offer products that are always at the forefront using the best technologies on the market. The results are fantastic on the eye even before they are on the road. The performances are very high and all Vespa tuning enthusiasts can recognize them by now.
All Max Quattrini cylinders, like this one and almost all the kits sold on our site, can only be used on the track and never on the road if not properly approved.

This and other Quattrini products for vespa are:

M1B D60 GTR (144cc naturally aspirated)
M1B D56 GTR (125cc naturally aspirated)
M1L D60 GTR (144cc reed valve to cylinder)
M1L D56 GTR (125cc reed valve to cylinder)
M1L D60 R53 (150cc reed valve to cylinder only for c1 Quattrini crankcase)
M200 (200cc reed valve to cylinder only for c200 Quattrini casings)
M1X (172cc valve per px) M1xl (172cc reed valve per cylinder)
M3XC GTR (M1-M1l expansion)


Our complete engines are also available, some ready for delivery, others customizable by reservation with delivery in about 30 days.

Other racing components and complete engines on request are Falc, Malossi, Polini, Bfa and many others. For any request, do not hesitate to contact us by email at motorartretro@gmail.com or by phone / whatsapp at +393755789138.

If you have questions about our products, direct assistance is always available via whatsapp or by call, we will be available to clarify any doubts.