Polini Race clutch kit with reinforced 4-disc clutch and shaft spring suitable for Vespa with central spring like Vespa Primavera PK 50, 125 and small frame models. Suitable for engines in original condition as well as tuned engines up to 15PS.
The innovative wave spring was designed with high precision. Due to its structure, this spring distributes the pressure evenly on the friction area. Thus, a pressure of up to 200kg can be built up. To do this, the contact point of the spring must be adjusted using the adjustment washers included in the kit. The standard setting is 80kg. The clutch hub has a special centre seat to ensure that the wave spring is optimally seated. The clutch hub and the separating discs are made of nitrite steel (increased friction coefficient).
Tip: Polini recommends soaking the cork discs in oil overnight before installation.
The Polini 4-disc clutch is alternatively also available in the Evolution version with pads made of sintered metal for tuning over 15hp (230.0503).
Scope of delivery as shown on the product picture.
The innovative wave spring was designed with high precision. Due to its structure, this spring distributes the pressure evenly on the friction area. Thus, a pressure of up to 200kg can be built up. To do this, the contact point of the spring must be adjusted using the adjustment washers included in the kit. The standard setting is 80kg. The clutch hub has a special centre seat to ensure that the wave spring is optimally seated. The clutch hub and the separating discs are made of nitrite steel (increased friction coefficient).
Tip: Polini recommends soaking the cork discs in oil overnight before installation.
The Polini 4-disc clutch is alternatively also available in the Evolution version with pads made of sintered metal for tuning over 15hp (230.0503).
Scope of delivery as shown on the product picture.
