Thermal groups for Vespa and parts

Attention: On the original Piaggio casing, it is necessary to bore.

aluminum
Ø 38.4 - 41 - 43 mm
long thread

(6 transfers - 2-ring piston)

In these thermal units, the characteristic of high durability of cast iron combines with the almost obsessive quality standards of Malossi, one of the very few companies demanding the maximum even from this class of thermal units.
In this perspective, the very strict selections for the coupling between the cylinder and piston are strictly maintained within the range of 20 microns maximum tolerance.

The only cylinders on the market for CIAO/SI with split exhaust and symmetrical transfers!
The exhaust fitting is screwed on and offers two great advantages: Extreme resistance and the possibility of replacement in case of breakage Possibility to enlarge the exhaust outlet, further increasing performance These results have been made possible by the decompression valve provided in the kit, which is smaller than the original Piaggio one.
The most important innovation is represented by the completely redesigned internal transfer system, specifically studied to achieve cylinder washing while maximizing power at the correct usage regime.

Attention: On original Piaggio crankcases, it is necessary to bore.

The only cylinders on the market for CIAO/SI with split exhaust
and symmetrical ports!!!!

The exhaust fitting is screwed on and offers two major
advantages:
Extreme durability and the possibility of replacement in case of breakage
Possibility to enlarge the exhaust outlet, further
increasing performance

These results have been made possible by the decompression valve
provided in the kit, which is smaller than the original
Piaggio one.

The most important innovation is represented by the completely redesigned
internal porting
specifically studied to achieve cylinder flushing
maximizing power at the correct operating speed.

Note: On the original Piaggio engine case, boring is necessary.

Bore: 46 mm

Displacement: 75 cc

Piston pin: 12 mm

Attention: On original Piaggio crankcase, it is necessary to bore.

with flanged exhaust, 22MM manifold.
Single ring

The Pinasco thermal unit "EVOTEN BIG BORE QUADRO" Ø 46mmx46mm is a new product dedicated to the world of Piaggio mopeds with a 46mm stroke crankshaft and is the specific thermal unit for Pinasco 46x46 Master and Slave crankcases.

The displacement is close to 80cc, it is equipped with a single ring piston and mounts flanged exhaust manifolds of 22, 25, and 28mm.

The Pinasco thermal unit "EVOTEN BIG BORE QUADRO" is supplied with the new unified central spark plug head with 5 studs fixed in a recess and complete with a decompression valve that definitively eliminates the problem of leaks in the combustion chamber and the consequent performance drops; the compression ratio is 13.5:1.

diameter: 43mm
pin: 10

Without head

Head without decompressor hole.

Head without decompression hole

Pinasco aluminum thermal group Ø 42mm, ideal for those who want to add some zest to their 50cc. The kit does not require any special technical knowledge for installation and easily fits all CIAO, SI, BRAVO mopeds. The aluminum with Nicasil coating gives the Pinasco thermal group exceptional robustness and unique resistance, ensuring superior performance in
all usage ranges.

 
60cc transformation

Pinasco thermal group in aluminum Ø 42mm, ideal for those who want to add a bit of zest to their 50cc. The kit does not require special technical knowledge to be mounted and easily fits all CIAO, SI, BRAVO mopeds. The aluminum with Nicasil coating gives the Pinasco thermal group exceptional robustness and unique resistance, ensuring superior performance in
all usage ranges.

Diameter 43 mm, pin 10 mm

Bore--> 38.2 mm
Notes--> Without head

Attention: On the original Piaggio crankcase, it is necessary to bore.

Having fun without complications

(6 transfers - 2-ring piston)

Malossi cast iron thermal groups, the first and simplest step to modify your moped's engine, are the optimal choice to continue using a standard or homologated exhaust system.

Having fun without complications

(6 transfers - 2-segment piston)

The Malossi cast iron thermal groups, the first and simplest engine modification step for your moped, are the optimal choice for continuing to use a standard or type-approved exhaust system.