Primary transmission gear straight teeth Z 24x72 for Vespa 50 N/L/R-Special-90/125/​Primavera/​ET3/​PK50/125/​S/​XL/​N/HP

Bore--> 38.4 mm

Equipped with a self-locking cone capable of stably coupling the crankshaft and the pinion.

With this system, the key does not need to be used. Ideal
for tuned engines and for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply a strong type of locking agent on the
fastening nut and to respect the tightening torque of 60-70 Nm.

A 3-thread extractor is required for disassembly, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong-type threadlocker on the
fastening nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread puller is required, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong type locking agent on the
fastening nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread puller is required, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged on the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong threadlocker on the
fastening nut and to respect the tightening torque of 60-70 Nm.

A three-thread puller is required for disassembly, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for tuned engines and for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong type threadlocker on the
fixing nut and to respect the tightening torque of 60-70 Nm.

A 3-thread puller is required for disassembly, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts and interchangeable. It is recommended to apply strong type threadlocker on the
fixing nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread puller is required, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong-type locking compound on
the fixing nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread extractor is necessary, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and
for crankshafts damaged at the key seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong-type locking compound on
the fastening nut and to respect the tightening torque of 60-70 Nm.

A 3-thread puller, not included, is required for disassembly.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged on the
key seat.

The cone is compatible with the entire range of Piaggio
crankshafts and interchangeable.  It is recommended to apply a strong type of locking agent on the
fixing nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread puller is required, not included.

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and for crankshafts damaged on the key
seat.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong type lock
on the fixing nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread puller is required, not included.

Provided are no. 3 M4 screws with a recessed hexagon and a central screw with a hexagonal head no. 13

Required wrench: 19

The Pinasco 102cc SRV "Zuerino" Ø 55mm thermal group is a new product dedicated to the world of Vespa 50 and Ape 50 with a 43mm stroke. Based on the famous Zuera 135cc, the 102cc SRV "Zuerino" features a transfer system very similar to that of its bigger brother, using the same RD350-type reed valve pack and the same flow guide, it mounts a single-ring piston with bi-conical pin, the new central spark plug head with 8 studs and centering bushings that definitively eliminates the problem of leaks and consequent performance drops with a compression ratio of 12.3:1.

The Pinasco 102cc SRV is a generous engine designed to make the most of power at low revs, its exhaust port has been designed to work correctly with original exhausts and commonly called "banana" stamped exhausts but can also be used in more advanced setups.

The Pinasco 102cc SRV "Zuerino" Ø 55mm thermal group is a new product dedicated to the world of Vespa 50 with a 43mm stroke.

Based on the famous Zuera 135cc, the 102cc SRV "Zuerino" features a transfer system very similar to its bigger brother, uses the same RD350 type reed valve pack and the same flow guide, mounts a single-ring piston with bi-conical pin, the new central spark plug head with 8 studs and centering bushings that definitively eliminates the problem of leaks and consequent performance drops with a compression ratio of 12.3:1.

The Pinasco 102cc SRV is a copious engine designed to make the most of power at low revs, its exhaust port has been designed to work correctly with original exhausts and stamped mufflers
commonly called "bananas" but can also be used in
more advanced setups.

It does not require special modifications to the engine case, it can be used with
all crankshafts on the market including the original ones, its
installation allows the use of engine

Bore--> 55 mm

Bore--> 47 mm

Bore--> 47 mm

The gear lock is used to easily block the primary transmission of your Vespa smallframe engine.

By placing the component between the sprocket and the gear, thanks to its asymmetrical shape,

we can securely and stably block the normal rotation of the gears.

VMC has developed a superior class cylinder with this lamellar to the RV-A 100 cylinder.

The technical solutions on this cylinder allow performances that were 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 the 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 screw kit and gasket kit in paper of different thicknesses.

Recommended carburetor sizes: 19 - 24 mm

Made in Italy

Made in Italy

Equipped with a self-locking cone capable of stably coupling the crankshaft and pinion.

With this system, the key does not need to be used. Ideal
for modified engines and
for crankshafts damaged at the key location.

The cone is compatible with the entire range of Piaggio crankshafts
and interchangeable. It is recommended to apply strong type locking
on the fixing nut and to respect the tightening torque of 60-70 Nm.

For disassembly, a 3-thread puller is required, not included.