Piaggio 8250845 Rear Wheel Axle – Fly 50, Liberty 50, Vespa Primavera and Sprint 50

The Piaggio 8250845 rear wheel axle is the output shaft of the gearbox assembly: it holds the toothed ring gear which receives motion from the transmission and, at the other end, the splined profile and thread onto which the rear wheel is mounted. The official Piaggio catalog designation is "REAR WHEEL AXLE". It is intended for Piaggio Fly 50 4T, Liberty 50 2T, Scarabeo 100 4T, Vespa Primavera 50 and Vespa Sprint 50. Code 8250845, new original spare part.

✓ Strengths

• Not just a simple pin – it is the drive shaft of the rear wheel, with the gearbox's toothed ring gear integrated into the same piece (observed from the product photograph).
• Original Piaggio spare part – same dimensions and reduction ratio as specified by the factory, no adaptations needed.
• Splined wheel attachment – splined profile for the hub, thread and transverse hole for the nut's safety pin (observed from the photograph).
• Ground bearing seats – cylindrical bands machined for bearings and oil seals, with a shoulder stop (observed from the photograph).
• One code for five families – the same item covers Fly, Liberty, Scarabeo 100, Primavera and Sprint.

Technical features

* data taken from product photograph, not declared in Piaggio catalog. The grey color is also confirmed by an independent retailer.
** estimated indicative value: weight is not declared by either the Piaggio catalog or retailers. It is only used to calculate shipping.

Vehicle compatibility

Can't find your version or don't know which trim level you have? Contact us for more information: with the chassis number, we can verify the exact code for your vehicle.

Who is it perfect for

It's the spare part for those who have opened the transmission casing of a Vespa Primavera or Sprint 50, a Fly or a Liberty and found worn or chipped teeth, excessive play, or damaged splines on the wheel attachment. It is of interest to workshops that rebuild the complete gearbox – usually together with bearings and oil seals – and to those who are restoring a scooter a few years old and want the original part, with the same standard ratio, instead of a reconditioned equivalent.

Frequently Asked Questions

What exactly is the 8250845 rear wheel axle?
It is the output shaft of the gearbox assembly. On one side it holds the toothed ring gear that receives motion from the transmission, on the other the splined profile and thread onto which the rear wheel is mounted. It is not a through-pin to be removed from the outside: it is accessed by opening the transmission casing.

Does the same code fit both Vespa and Fly?
Yes. Fly 50 4T, Liberty 50 2T, Scarabeo 100 4T, Vespa Primavera 50 and Vespa Sprint 50 share the same final drive scheme, so Piaggio assigns code 8250845 to all of them in the "Gearbox assembly" table. Exact versions by year and market are in the compatibility table.

When should it be replaced?
When the teeth of the ring gear are worn or chipped, when there is noise or play from the gearbox, or when the splines of the wheel attachment are damaged and the hub no longer tightens correctly. These checks are done with the casing open, usually during a transmission overhaul.

What needs to be changed along with the axle?
The supply includes only the shaft. In a gearbox overhaul, bearings, oil seals, and shims are also normally replaced, and the wheel nut with its safety pin must be reassembled. If you want the complete list of parts for your model, contact us for more information: we will prepare a quote for the kit.