Full shoulders Ø87mm, stroke 51mm, connecting rod 97mm, shaft length 48mm.
Pin 15 mm

Displacement: 144 cc - New version with exhaust booster

New version of the thermal group for Vespa ET3, Primavera, Special, PK,
crankcase intake. It has a larger exhaust (muffler fixing hole spacing
of 56mm), an interior with new transfer ports,
resized shell, and an enlarged base. It consists of an
aluminum cylinder (Nikasil, 60mm bore, 51mm stroke, 150cc,
exhaust booster, 5 transfer ports), interlocking aluminum head,
lightened piston (single ring), gaskets, assembly instructions.
It can be mounted without boring the crankcase.

Head with central spark plug

Bore: 62 mm
Displacement: 172cc
Stroke: 57 mm

Cylinder coating: Nikasil

Head with central spark plug

Bore: 62 mm
Displacement: 172cc
Stroke: 57 mm

Cylinder coating: Nikasil
Reed valve intake on the cylinder

Race 53

SPECIFIC FOR QUATTRINI M244 THERMAL GROUP
Stroke 60 mm
Rod length 126 mm (rotary valve)

Dimensions: 16x20x20 mm

Ø 72mm
2 piston ring(s)
piston pin Ø 16mm

Round flywheels, stroke 51mm
Shoulders 87
Fits both bearings 20x47x14

Ideal for Quattrini M1B

Ø 16x59 mm

Vespatronik Quattrini 12V 90W electronic ignition with variable advance, great reliability and performance extensively tested on track and road.
Gray fan, instructions inside the box for correct use.

Ø 62mm
2 piston ring(s)
piston pin Ø 15mm

Ø 62mm
2 piston ring(s)
piston pin Ø 15mm

Ø 62mm
2 piston ring(s)
piston pin Ø 15mm

Carter for Vespa Special, Et3, and PK entirely cast and machined in Italy.

They are reinforced in thickness in every part, made in shell with tempered Galsi9 material and assembled with 13 hexagon socket screws of 6mm.

On the flywheel side, they are machined to also accommodate the Vespatronik ignition and on the top side, they are prepared for the installation of exhausts that run behind the shock absorber (such as M3XC, Tipo R, or
similar).

Originally closed by casting, it will only need to be opened to mount cylinders without intake.

The support arm is much more robust than the original, shaped in
a way that allows the use of a 3.50/10 tire.
Equipped with a support for the water pump that takes movement from the
fourth gear (third gear).
The wide and thick base is made to accommodate various types of cylinders
of the M, R series, or other brands, without welding overlays.
Inside, the pump housing is machined for the installation of its dedicated full-shoulder shaft, with

77x77x40 mm
incl. gaskets
4 valves without stop

Full shoulders Ø85mm , stroke 51mm, connecting rod 102mm, shaft length 48mm.
To be mounted with two bearings 25x52x15mm and two oil seals 24x35x7mm. Optional to be purchased separately

Corsa 57 mm

Inside tube diameter 23.5 mm

Inside needle attachment diameter 25.3 mm
Length approximately 240 mm

Compatible with Carter Quattrini and Pinasco

Note--> Complete with brackets and bolts
Exhaust tested and recommended on Quattrini M1 or M1L cylinders, entirely handmade with 0.8 mm sheet metal. Aluminum silencer with ceramic fiber.

Ø 72mm
2 piston ring(s)
piston pin Ø 16mm