Bore: 55

Stroke: 43
Displacement: 102 cc

Bore diameter 58mm Stroke 51mm Displacement 135cc
Timing: Main transfers 124° Exhaust 180°
Aluminum alloy dual-ring piston with high silicon content.
CNC machined die-cast aluminum head
Steel rings Steel pin Steel clips
It mounts with 51mm stroke crankshafts and 97mm connecting rod
No need to file or remove the dust seal half-moon on the engine casing base. 

Paired with the VMC Siluro exhaust, it becomes an engine with power always available while maintaining the reliability of the original engine with a classic look and sound.

The perfect tuning for your Vespa.

Bore: 68.5 mm
Stroke: 57 mm
Long thread spark plug
Power range: 23>30 hp
7 transfers

MHR Version: The MHR version differs from the SPORT one not only in the exhaust port, but also in the decidedly racing transfer diagrams.

7-port aluminum cylinder with Nikasil-coated bore and exhaust "Booster".
Bore diameter 63mm, stroke 57mm, displacement 177cc,
main transfer phases 117°, exhaust 177°. Meteor dual-ring aluminum alloy piston

Die-cast aluminum head with 8 fixing points with recessed squish band
Steel rings. Steel pin. Steel retainers.
Cylinder gaskets in paper/aluminum.
Zinc-plated steel exhaust manifold bolted with Viton O-ring gasket.

Bore: 68.5 mm
Stroke: 60 mm
Long reach spark plug

Ø 16x59 mm

Cylinder 7 transfers in cast iron, spheroidal casting technology by gravity.

Bore diameter 63mm, stroke 57mm, displacement 177.59 cc,

main transfer phases 114°, exhaust 173°. Aluminum alloy dual-ring piston

CNC machined aluminum head with 8 fixing points and head/cylinder O-ring gasket in Viton

Steel rings. Steel pin. Steel locks.

Cylinder gaskets in paper/aluminum with a plug to close the hole on the original shroud.

Zinc-plated steel exhaust manifold screwed with Viton O-ring gasket.

Ø 72.5 mm
aluminum

Note-->5 transfers

Meteor Piston

The BGM 200cc cylinder is an improved version of the already reliable and powerful original cylinder. Suitable for 200cc engines of the Rally200, PX200, Cosa200, and the Spanish models DS/DN/TX/Iris, the BGM cylinder offers an additional advantage in terms of safety and performance thanks to an exact honing of 9/100 operating distance and slightly larger transfer ports. This makes it slightly more powerful and more fuel-efficient compared to the original.
 

The original head can be used, ready for installation with pistons, clips, piston pins, and base gasket.

Brand: DR
Bore: 55mm
Stroke: 43mm
Displacement: 102 cc

cast iron
2 transfers
Ø 55.0mm
stroke 51mm
connecting rod: 97.0mm
2 piston rings
without cylinder head

Brand: Pinasco
Bore: 63
Displacement: 177 cc

VMC has created a superior class cylinder with this lamellar for the RV-A 100 cylinder.

The technical solutions on this cylinder allow for performance that was previously reserved for long-stroke cylinders.

The cylinder is made of aluminum with a Nikasil-coated barrel and lamellar intake.

The head is CNC machined, with a viton gasket and secured with eight M6 bolts.

It has a bore of 54 mm and a stroke of 43 mm, 8 transfers 

Exhaust port with bridge with an outlet diameter of 28 mm and stud spacing of 52 mm

Phases 113° intake and 171° for exhaust

The manifold has an internal diameter of 25 mm and is equipped with a four-petal reed pack.

Included in the kit are the original valve closure cap screws and a kit of paper gaskets of different thicknesses.

Recommended carburetor size: 19 - 24 mm

Bore: 50 mm
Stroke: 43 mm

Diameter: 56 mm
Mounted with flush piston, lower edge, 128 main transfers, 178
exhaust, to have more power over 10000 raise the exhaust by 2mm,
with VMC exhaust pipe.

Bore--> 50 mm

Brand: DR
Bore: 57
Stroke: 51
Displacement: 130 cc

Transfers: 3

Diameter: 57.8 mm

Stroke: 57 mm

Bore: 63
Displacement: 177cc
Stroke: 57 mm

6 Transfers/Bore: 55/Stroke: 43/Displacement: 102 cc
recommended spark plug: L78C Champion

Suitable for Polini thermal groups 208/210/221cc

Diam. 68.5 mm with centering hole

7-port aluminum cylinder, barrel with nickel-silicon treatment.
Bore diameter 63mm/Stroke 57mm
Phases-->Main transfers 114°   Exhaust 171°
New Bifascia aluminum alloy piston
New model of CNC machined aluminum head, Viton O-ring
Squish 1mm ±0.1mm/Nut torque 11÷12 Nm/Bolt torque 10÷11 Nm
RECOMMENDATIONS-->Spark plug NGK B9ES; BOSCH W3CC, Advance 19° before TDC
Main jet 125-130

Diameter: 68 mm

Stroke: 57 mm

Thermal Group Parmakit "Challenger"

Manifold Ø 25

- aluminum cylinder Ø 57 - nicasil liner
- intake manifold Ø 25 mm
- fusion head lateral spark plug hole
- 4-petal reed valve
- Vertex piston with one steel ring

Flow guide not included

DIAMETER: 57
DISPLACEMENT: 130
PIN: 15
STROKE: 51
ROD: 97
TRANSFERS: 5

Bore: 63 mm-Stroke: 57 mm-Long reach spark plug
A completely new thermal group is born, designed in every
part to achieve the maximum result in terms of performance and
durability. Every aspect of the system has been studied to maximize
mechanical resistance, fluid dynamics, and improve combustion: the
result is a top-of-the-line kit for construction quality and technological advancement.

Diameter: 66.5 mm

Stroke: 57 mm
Notes: Without head

Bore: 57.5 mm
Stroke: 51 mm
Transfers: 7
Spark Plug Champion N3C-Denso IW 27

Thermal Group Parmakit ECV

PLUG & PLAY
- aluminum cylinder Ø 55 elliptical exhaust port
- nicasil-coated liner
- fusion head with side spark plug hole
- Vertex piston with two steel rings

DIAMETER: 55
DISPLACEMENT: 121
PIN: 15
STROKE: 51
ROD: 97
TRANSFER PORTS: 5

Displacement: 135 cc

3 transfers
Diameter: 57.8 mm

3 transfers
Diameter: 38.4 mm

diameter: 16 mm
inner diameter: 10.80 mm
length: 58.3 mm

includes stops

Biella 97mm

Brand: Polini
Bore: 63
Displacement: 177cc
Spark Plug--> L78C/BR8HS/B8HS