Postage free from 99€ (DE)
High customer satisfaction
DE | €
- Vespa Classic
- Clutch kit -POLINI EVOLUTION- with clutch spring - Wave - Vespa Smallframe 50 - 125
| Version | Polini EVOLUTION 4-disc sports/racing clutch core with central wave spring, without linings |
|---|---|
| Clutch type | For classic smallframe central spring clutch with small clutch spider (V50, PV, ET3, PK S/XL, ETS, Ape 50) |
| Spring principle | New type of flat wire wave spring - no tilting, clean separation, moderate manual force |
| Load capacity | Nitrided spider, base and cover plate - designed for engines well over 15 hp |
| Adjustability | Contact pressure adjustable up to approx. 200 kg via spacers |
| Compatible | All Vespa & Motovespa Smallframe with small central spring clutch, except PK XL2/HP/FL and automatic models |
| Not suitable | PK XL2, HP/FL models with modern multi-spring clutch and all Smallframe automatic vehicles |
This Polini EVOLUTION clutch unit is designed for powerful engines in classicVespa Smallframe and Piaggio Ape 50. It replaces the complete clutch core of the original Smallframe central spring clutch (small spider) and, with anew type of flat wire wave spring, provides significantly more reserves and better operability. The EVOLUTION core is supplied without clutch linings - ideal if you want to match the linings and pack thickness specifically to your setup.
For classic smallframe central spring clutch Innovative central wave spring Designed for engines > 15 hp Nitrided steel components Contact pressure up to approx. 200 kg
Polini offers two clutch variants with identical basic design for Vespa Smallframe:
The product described here is the EVOLUTION clutch core with wave spring and nitrided steel parts - without linings. You can use it to upgrade an existing For-Race or EVOLUTION kit, fit a new one or put together your own pad package.
The heart of the Polini clutches is the flat wire wave spring. In contrast to the conventional coil spring, it cannot tilt on one side. The spring works over its entire surface, the linings run flat and separate cleanly. This reduces plucking, reduces heat spots and ensures a clearly defined pressure point on the clutch.
At the same time, the clutch is noticeably easier to operatewith comparable contact pressure than with a very hard coil spring - a clear advantage in everyday use and on the racetrack.
The spider, base plate and cover plate are made of nitrided steel and are therefore significantly more resilient than standard parts. The base plate has an enlarged diameter spring mount, which securely guides the wave spring. Depending on the engine power, the contact pressure can be increased to around 200 kg using the spacers supplied.
The Polini EVOLUTION clutch fits all engines with the classic Smallframe central spring clutchand small clutch spider (original V50/Primavera/PK S/PK XL design). These include, among others:
All automatic smallframes (e.g. PK Automatic, Plurimatic) and models with modern XL2/HP/FL clutch (internal lever mechanism, multi-spring basket) areexcluded. The clutch design is fundamentally different for these engines and this EVOLUTION kit is not suitable.
The wave spring used in the EVOLUTION and FOR-RACE kit is a special Polini design: It is shorter, has a larger outer diameter and only fits into the enlarged spring holder of the EVOLUTION/FOR-RACE base plate. It is not identical to the separately available Polini wave spring for standard clutches - mixing the springs is not intended.
The set includes spider, base plate, cover plate, central wave spring and spacer rings. Theclutch linings and friction discs are not included and are selected to suit the intended use. When setting up theclutch, ensure the correct pack thickness and sufficient clearance to the clutch basket.
