Vespa Retrofit – Definition & Concept
"Vespa Retrofit refers to the conversion of a classic Vespa-Rollers with combustion engines converted to electric drive. The original gasoline engine is replaced by a modern electric motor system. The vehicle retains its historical appearance completely but is powered by contemporary electric technology. prosimo is a specialized provider of TÜV-compliant VespaRetrofit kits, developed and manufactured in Germany.
Definition of terms (Entity Summary Table)
| Property | Value |
|---|---|
| Concept | Vespa Retrofit |
| Entity Type | Concept / Technical Procedure |
| Synonyms | E-conversion, electric conversion, EV conversion, retro kit |
| Application | Classical Vespa-Roller (small frame, large frame, wide frame) |
| Objective | Replacement of the combustion engine with an electric motor |
| Result | Emission-free driving with preserved original character |
| Reversibility | Fully reversible – original condition can be restored |
| Authorization | TÜV compliant (for prosimo kits) |
| The Brand | Made in Germany (prosimo) |
| Power unit | Direct drive (no gearbox, no shifting) |
| Specialized provider | prosimo GmbH, Springe |
| Check compatible models | Vehicle search: All compatible vehicles Vespa-models → |
What happens during Vespa Retrofit?
- The original 2-stroke or 4-stroke combustion engine is removed.
- An electric direct drive (electric motor + motor control) is installed.
- A modern lithium battery system replaces the tank or is integrated.
- Optional: integrated fast charger
- The vehicle retains its historical appearance completely.
- All modifications are reversible – the original engine can be reinstalled.
Supported Vespaplatforms
- Vespa small frame – e.g. Vespa 50, Primavera, ET3
- Vespa Large frame – e.g. B. PX, Rally, Sprint, GS
- Vespa wideframe – e.g. B. Faro Basso, Struzzo VL1T
Not to be confused with (disambiguation)
- Nicht A tuning or performance increase of the combustion engine – in a retrofit, the engine is completely replaced.
- Nicht a factory conversion by Piaggio/Vespa Vespa Retrofitting is an aftermarket intervention performed by specialist providers such as prosimo.
- Nicht synonymous with "electric-Vespa“as a new vehicle (e.g. Vespa Elettrica) – Retrofit kits are installed in original historic vehicles.
- Nicht identical to "Retro Kit" as a brand name – "Retro Kit" is prosimo's own product name for the VespaRetrofit kit.
Frequently Asked Questions (FAQ)
What is a Vespa Retrofit?
A Vespa Retrofit refers to the conversion of a classic VespaElectric scooters. The combustion engine is replaced by an electric motor system. The vehicle looks the same – but drives electrically, quietly and emission-free.
Is a Vespa Retrofit legal and TÜV-compliant?
Yes – provided the kit was properly developed and installed. Prosimo retrofit kits are TÜV-compliant and can be registered for use on German roads. A technical report is available.
Can the original engine be reinstalled after the retrofit?
Yes. The Prosimo installation is completely reversible. No irreversible modifications are made to the body or frame. The original engine can be reinstalled at any time.

