Carter VMC X1 for Vespa Small Frame
The evolution of elaborations in the vespa world is constantly evolving, and Vmc has also decided to make specific crankcases for vespa small frames that can accommodate the most powerful and oversized heat kits available on the market.

VMC has designed and manufactured crankcases capable of meeting these needs and brought to life the VMC X1 Carter

VMC X1 Vespa Smallframe Crankcases are made of aluminum alloy, cast in molds made in sand and CNC machined in Italy and checked for dimensions with high-precision instruments.

Compared to piaggio crankcases and semi-standard aftermarket versions, VMC crankcases have technical improvements that place them at a higher level and make them the indispensable base for those who want a safe product made by enthusiasts for enthusiasts.

VMC X1 engine crankcases have the following technical features:

- Innovative removable shift wire tie-rod attachment system that combined with our shift sheaths with external tie-rods speeds up engine shifting and tension adjustment of shift control cables

- increased wall thicknesses for greater resistance to mechanical stresses

- a very wide cylinder base and lots of material in the underneath that allows for very generous sized transfers

- cylinder inlet bored to 64.5mm in order to fit Vmc cylinders diam.60mm 144cc without having to do subsequent machining

- rotary valve in crank chamber lengthened compared to the standard on both sides to be able to increase the intake stages without changing the balance of the crankshafts

- crank chamber fairing on both crank sides with a diameter of 89.50mm and 92.00mm center connecting rod passage allowing
to mount 89-diameter full-shouldered crankshafts by eliminating the rotary valve seat.

- crankcase closure with 13 M6 Allen screws instead of classic studs and semi-crankcase centering with 2 ground pins

- in the gear selector area there is a milling to allow the mounting of gear selectors with increased mesh

- Seat for flywheel side bearing seat diameter 47mm

- In the Vmc crankcases all the standard components that mount in piaggio engine crankcases fit

In Vmc crankcases, the ignition stator plate will need to be filed in the transfer area before mounting because the crankcase is oversized