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Engine Vespa PX 125
Delivery time: 4-6 weeks within Germany

High-torque exhaust from manufacturer Polini in original look - the characteristics of this exhaust system are a perfect match for our everyday and touring-suitable PX 125 engines.
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The 26mm Pinasco SI carburetor in the VRX version with intake funnel has long been our workshop standard for rotary valve-controlled Vespa PX engines of all displacement classes.
Unlike the SI 24 carburetors fitted as standard in the Vespa PX 200 engines, the Pinasco SI 26 is perfectly designed from the factory for use in performance-enhanced Vespa engines in terms of fuel supply - the Venturi results in a noticeably better engine response.
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CNC-machined carburetor bowl with excellent fit and perfect sealing surfaces - standard equipment on all Vespa PX engines from our Vespa workshop.
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CNC-machined carburetor bowl with excellent fit and perfect sealing surfaces - standard equipment on all Vespa PX engines from our Vespa workshop.
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Our Vespa PX engines are equipped as standard with a CNC-machined BGM Superstrong clutch basket and a reinforced clutch gear from the manufacturer DRT with 23 teeth; the primary gear ratio of 23/65 teeth corresponds to that of an original PX 200 engine.
For high-torque engines like the Quattrini 244ccm, we recommend, in addition to a long first and second gear on the main shaft, an extension of the primary gear ratio using the DRT clutch gear with 24 teeth.
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Our Vespa PX engines are equipped as standard with a CNC-machined BGM Superstrong clutch basket and a reinforced clutch gear from the manufacturer DRT with 23 teeth; the primary gear ratio of 23/65 teeth corresponds to that of an original PX 200 engine.
For high-torque engines like the Quattrini 244ccm, we recommend, in addition to a long first and second gear on the main shaft, an extension of the primary gear ratio using the DRT clutch gear with 24 teeth.
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Our Vespa PX engines are equipped as standard with high-quality Sip Performance gears on the drive shaft - the gear ratio corresponds to that of an original PX 200 engine with a short fourth gear.
For the very high-torque Quattrini 244cc engines, a long first and second gear from the manufacturer DRT is recommended in most cases, so as not to have to regularly fight with a light front wheel in the lower gears.
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Our Vespa PX engines are equipped as standard with high-quality Sip Performance gears on the drive shaft - the gear ratio corresponds to that of an original PX 200 engine with a short fourth gear.
For the very high-torque Quattrini 244cc engines, a long first and second gear from the manufacturer DRT is recommended in most cases, so as not to have to regularly fight with a light front wheel in the lower gears.
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Our Vespa PX engines are equipped as standard with high-quality Sip Performance gears on the drive shaft - the gear ratio corresponds to that of an original PX 200 engine with a short fourth gear.
The gears from manufacturer DRT are among the highest quality and most durable gears on the market: We offer the third and fourth gears as an alternative to the Sip Performance gears installed as standard.
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Our Vespa PX engines are equipped as standard with high-quality Sip Performance gears on the drive shaft - the gear ratio corresponds to that of an original PX 200 engine with a short fourth gear.
The gears from manufacturer DRT are among the highest quality and most durable gears on the market: We offer the third and fourth gears as an alternative to the Sip Performance gears installed as standard.
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We offer the Sip ignition for Vespa PX engines in two different versions, both versions include a linear adjustment of the ignition timing by a total of 8 degrees.
The AC version is designed for operation with alternating current only; in this case, no battery is used.
The DC version of the Sip Vape ignition, thanks to its high alternator output of 110W and the included rectifier, provides all Vespa consumers with direct current: As soon as the ignition is switched on, the headlights, digital speedometers, LED indicators, etc. function fully or with 100% light output.
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We offer the Sip ignition for Vespa PX engines in two different versions, both versions include a linear adjustment of the ignition timing by a total of 8 degrees.
The AC version is designed for operation with alternating current only; in this case, no battery is used.
The DC version of the Sip Vape ignition, thanks to its high alternator output of 110W and the included rectifier, provides all Vespa consumers with direct current: As soon as the ignition is switched on, the headlights, digital speedometers, LED indicators, etc. function fully or with 100% light output.
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We install the completed engine in our test bench chassis and perform engine tuning on our in-house Amerschläger P4 dynamometer, which includes both the correct ignition timing and the appropriate carburetor setup and adjustment.
The nozzles etc. required for the tuning are already included in the price for the engine tuning.
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Get advice now without obligation

Get advice now without obligation

Get advice now without obligation
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Delivery time: 4-6 weeks within Germany
Delivery time: 4-6 weeks within Germany
Vespa PX 125 engine
Installed components

Malossi engine casing
Very high-quality engine casings with many well-thought-out details - reinforced at all critical points compared to the original Piaggio PX engine casings.

Sip Performance crankshaft
Very high-quality and stable crankshafts with a very good balance ratio and polished connecting rod.

BGM Superstrong clutch
CNC-machined clutch basket including inner part - stable even for engines with significantly more than 30HP rear wheel power.

DRT reduction gear
Extremely durable and precisely manufactured reduction gear - standard on all our Vespa PX tuning engines.

Gear wheels DRT - Sip
Both the gears from the manufacturer DRT and the Sip gears installed as standard in our motors are characterized by high manufacturing quality and high durability.

Primary gear DRT
The primary gear ratio of our Vespa PX engines also consists of reinforced components from the manufacturer DRT.

Clutch gear DRT
The primary gear ratio of our Vespa PX engines also consists of reinforced components from the manufacturer DRT.
Individually configurable Vespa PX engine, optionally with 125cc or 187cc displacement and a rear wheel power output of 12 to 16HP - rotary valve controlled.
The 125cc version of this Vespa PX engine is ideal for holders of a 125cc-limited driving license: Equipped with the Sip Performance aluminum cylinder, the legally permitted 15hp engine power is easily and effortlessly utilized - the engine runs significantly more powerfully overall than an original Vespa PX 125 engine (approx. 6hp rear wheel power) and easily reaches a top speed of over 100 km/h.
The significantly larger 187cc version of this PX engine plays in a completely different league: Equipped with the proven Malossi Sport aluminum cylinder and a matching Sip Performance long-stroke crankshaft, this engine delivers around 16 hp to the rear wheel even at moderate speeds, which corresponds to an engine output of around 20 hp and makes the 187cc engine a fully-fledged touring setup, with which quick overtaking maneuvers are easily possible even at country road speeds.
Our Vespa PX engines are of course built exclusively from new parts - the base engine used in the PX 125 engine configurator is basically equipped with the same components as our 244cc engines with up to 30hp and therefore has almost unnecessary safety reserves in terms of components, which in any case ensure very good durability.
The rotary valve-controlled base engine includes, among other things, a Malossi V-one engine casing, a PX 200 Lusso gearbox with short 4th gear (Sip Performance), a BGM Superstrong clutch with CNC-machined clutch basket, a SIP Performance VAPE ignition with linear ignition timing, and a Sip Performance crankshaft.
In addition, our selection menu offers a wide range of further options and possibilities for customizing the chosen Vespa engine to individual preferences and needs - surcharges for certain additional options are indicated in the respective selection option.

Questions or special requests?
Contact us for your personal engine concept
Do you have questions about our configurable motor, require specific technical details, or want a different motor setup? Our team will be happy to advise you.
















