Description
Polini is one of the big names in 50cc scooter tuning, and is also one of the leading manufacturers of tuning parts for Vespa, modern and vintage. Cylinders, intake manifolds, exhausts, air filters, carburetors, crankshafts and more - everything you need to boost the performance of your Classic Vespa.
Polini Bearing + Oil Seal Kit for 19mm crankshafts Vespa 50cc PK / 125cc Primavera - a set of main bearings and oil seals for crankshafts with 20mm journals. As bearings and seals are holding the crankshaft in place and are exposed to strong rotational forces, we recommend replacing bearings and seals every time you service or upgrade your two-wheeler.
This Polini set includes 2x C4 steel main bearings and 2x high-quality FKM oil seals with PTFE sealing lips. They are extremely durable and resistant, even at high temperatures. In addition, frictional losses are minimized which leads to optimum crankshaft (and overall) performance and minimized heat generation.
- oil seals, right + left
- 2x ball bearings, C4 steel cage
- for crankshafts with 19mm journals
Crankshaft bearings for motorcycle, scooter and moped
Crankshaft bearings ensure the smooth operation of engines, whether on scooters, motorcycles or mopeds. The crankshaft is an integral part of the engine and the associated bearings and seals must be in perfect condition.
A crankshaft bearing set consists of ball bearings and oil seals. They are usually sold as a complete set and must be replaced each time the crankshaft is installed/re-installed.
What are the symptoms of defective crankshaft bearings?
The main symptoms of a defective crankshaft bearing are:
- Unusual metallic noises coming from the direction of the crankshaft.
- Unusual vibrations of the vehicle.
Defective bearings must be replaced immediately, otherwise there is risk of further damage to the engine. There are many different tools for crankshaft removal or bearing pullers.
You can see how to change crankshaft bearings in our crankshaft disassembly and assembly tutorial.
| Bearing + Oil Seal Kit for crankshaft Polini (19mm journals) Vespa 50cc PK / 125cc Primavera | |
|---|---|
| Article no. | P282.0005 |
| EAN | 8054705085307 |
| Weight | 0,28 kg |
| Brand | Polini |
| Product type | Crankshaft bearing kit |
| Stroke | Original |
| Conrod length | Standard |
