Piaggio 2362224 Cluster Gear Z12-13-17-21 Ø 42 mm – Vespa PX, T5, Rally, Cosa

The Piaggio 2362224 multiple gear is the gearbox primary shaft of large frame Vespas: the four-gear cluster Z 12-13-17-21 with an inner bearing seat Ø 42 mm that receives motion from the clutch and transmits it to the gears. Original Piaggio spare part for Vespa PX 125/150/200, T5 125, Rally 180/200 and Cosa. This is the current code that replaces 137334 and the old references 236222 and 1315874.

✓ Strengths

• Original Piaggio spare part – same gear cluster fitted at the factory, not a reproduction
• Out of production – Piaggio no longer supplies it: what remains is warehouse stock
• Original Z 12-13-17-21 teeth – maintains standard ratios, with no surprises on gear engagement
• Ø 42 mm bearing seat – the size for modern large frames, from Rally to PX '11
• One code for almost the entire family – PX, T5, Rally and Cosa share the same multiple gear

Technical features

Vehicle compatibility

The lines PX 30 Anni 125 (2007-2008) and PX 150 (2011-2017) come from the official Piaggio catalog for code 2362224. The rest of the compatibility is reconstructed by cross-referencing the catalogs of specialized Vespa spare parts dealers (Pedparts UK, Motorcycle Spare Parts, La Vespa Due, Vespatime, 10Pollici): this code is not present in the current Piaggio B2B. If your model does not appear in the table, write to us and we will verify it together.

Who it's perfect for

This is the part needed when the PX gearbox slips out of gear under load, grinds when engaging, or makes a constant metallic noise: these are symptoms of worn or chipped teeth on the multiple gear. Anyone rebuilding a large frame engine adds it to the list along with bearings and oil seals, because opening the crankcase twice makes no sense. And it is an item that Piaggio no longer produces: those restoring these Vespas buy it even just to keep it aside.

Frequently asked questions

What is the difference between codes 236222, 137334 and 2362224?
No difference in the part: they are the same multiple gear at different times in the life of the Piaggio catalog. The current code is 2362224 and the spare parts catalog explicitly states that it replaces 137334. Also 236222, 1315874 and 120946 refer to the same item.

Which Vespas does it fit on?
It fits on large frames with a 42 mm inner bearing seat: Vespa Rally 180 and 200, P125X, P150X, P150S and P200E, the entire PX 125/150/200 series including Arcobaleno, Lusso, '98, Millennium, MY and '11, the T5 125 and Cosa 1 and 2. Always check the bearing seat before ordering, or write us your vehicle model and year.

Is the z=65 crown wheel included?
The original Piaggio spare part is the multiple gear only. There are aftermarket kits on the market that offer it already paired with the z=65 helical crown wheel: these are a different item. If you also need the crown wheel or want confirmation of what the package contains, contact us for more information before purchasing.

How do I know if the multiple gear needs replacing?
The signs are the gear jumping under acceleration, grinding engagement even with a good clutch, and a metallic hum that changes with the engaged gear. When the gearbox is open, you will see teeth with rounded edges, wear steps, or chipping: in that case, the cluster must be replaced, not repaired.