Alesaggio : 47mm
Corsa : 43mm
Cilindrata : 75cc

nodular cast iron
3 transfers
short threading
Ø 57.0mm
stroke 57mm
incl. cylinder head

Bore diameter 56mm
Stroke 51mm
Displacement 126cc

Timing: Main transfers 124° Exhaust 174°
High silicon content aluminum alloy dual-ring piston.
Die-cast aluminum head, Steel rings, Steel pin, Steel retainers
Recommended squish 1.2 mm Bolt tightening m6 11-12 Nm, nuts m7 1.4-1.5 Nm
It mounts with crankshafts stroke 51mm and rod 97mm

Attention: To be mounted on Piaggio crankcases, a small modification on the half-moon is needed as the cylinder has been designed with generous fluid dynamics that require more space at its base.

Alesaggio: 47
Corsa : 43

aluminum
Ø 58.0mm
stroke 51mm
incl. cylinder head
Recommended spark plug: NGK BR10EG
Recommended ignition timing: 17/18°

cast iron 
6 transfers
Ø 58.0mm
stroke 51mm
incl. cylinder head
Recommended spark plug: NGK BR9ES
Recommended ignition timing: 17°

Bore: 57mm

Stroke: 51mm

Cuts--->  0.25mm/0.50mm/0.75mm

Bore: 63
Displacement: 177cc

Stroke: 57

Notes: Remarkable torque and low consumption.

This kit has been designed and developed for plug & play assembly, requiring no modifications to the engine casing. The power output is 21 HP at 7800 rpm and can reach up to 8500 rpm if properly configured.

In terms of performance and reliability, nothing to say, as this product has undergone 2 years of road testing and in the summer of 2019 traveled 10,000 km to and from Nord Kapp.

The kit is purely handcrafted, originating from sand castings strictly Made in Italy to provide those quality and reliability characteristics that distinguish it.

It can be installed on any type of low headlight casing with 3 studs from the year 1953 onwards. Having the short insertion neck in the casing, it requires no modifications. It requires the installation of a 60 stroke crankshaft, 110 rod.

The kit includes: head, cylinder, piston, reed valve pack, intake manifold, exhaust manifold, rubber sleeve for 24 PHBL carburetor, gaskets, and various bolts.

Questo kit è stato pensato e studiato per il montaggio plug & play,
non richiede nessun tipo di lavorazione del carter motore.
La potenza sviluppata è di 17 CV a 7000 rpm ed arriva fino a 8500 rpm se
correttamente configurato. In termini di prestazioni ed affidabilità
nulla da dire, su questo prodotto sono stati portati avanti 2 anni di
test stradali e nell’estate 2019 ha percorso 10000 km andando e tornando
da Nord Kapp.
La realizzazione del kit è prettamente Artigianale, proveniente da
fusioni in sabbia rigorosamente Made in Italy per dare quelle
caratteristiche di qualità ed affidabilità che lo contraddistinguono. È
possibile installarlo su qualsiasi tipologia di carter faro basso a 3
prigionieri a partire dall’anno 1953. Avendo il colletto d’inserimento
nel carter corto, non prevede nessun di lavorazione. Richiede il
montaggio di un albero in corsa 57, biella 110.
Il kit è fornito di: testa, cilindro, pistone, pacco lamellare,
collettore aspirazione, collettore di scarico, manicotto in gomma per
carburatore 24 PHBL, guarnizioni e bulloneria varia.

The BGM PRO 177cc is an improved and more powerful version of the proven BGM177 cylinder for Vespa PX125/150, now also compatible with models equipped with electric start.

Everyday Performance
The BGM177 cylinder is designed to offer high performance, durability, and reliability for daily use. By replacing the original cylinder, it is possible to double the power of the standard 125cc engine, with generous torque that allows for smooth riding. The cylinder can also be configured to reach over 20 HP, provided the right carburetor, exhaust, and crankshaft are paired with it. It is therefore an ideal solution for beginners who want to expand performance in the future.

With a displacement of 177cc, the BGM PRO 177 cylinder ensures a safe and relaxed riding experience, maintaining the same reliability and durability as a 200cc engine, operating within the same RPM range as a standard engine. It also offers low fuel consumption and good range. It is compatible with standard components, requiring only a small adjustment to the carburetor jet and spark plug.

Main Features
Material:

Bore: 63 mm
Displacement: 190 cc

Stroke: 60 mm

Race 60

Useful accessory for turning cylinder heads. Suitable for any type of head.

15mm x 1.25mm- type G - used for example with Polini 177 cylinder, Polini 130, DR130, DR177

Race 60

Round section 1mm

aluminum
5 ports
Ø 66.5mm
stroke 57mm
2 piston rings
Without cylinder head
incl. base gasket

Head with central spark plug

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

Cylinder coating: Nikasil

Bore: 63 mm-Stroke: 57 mm-Long reach spark plug
The thermal group is completely new and designed in every
part to achieve the best 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-range kit for construction quality and technological advancement.

Transfers: 3

Diameter: 52.5 mm

Stroke: 57 mm

Ø 16x59 mm

Ø 63mm
stroke 57mm
with SIP Road, clutch discs, POLINI air filter, SI 24 carburetor (without mixer), etc.

for thermal group 112 Polini

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

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

The brand new Zuera big bore thermal group has a 60 mm bore
the exhaust has been significantly enlarged compared to the previous model
increasing performance, what can I say for the most demanding a
cylinder to try out!

Bore: 55 mm
Stroke: 43 mm
Transfers: 6