Description
If you want to increase displacement on your Aprilia RS 125cc - Polini 154cc Aluminium Cylinder Kit, 60mm, Aprilia RS 125cc (ROTAX 122-123), available for a very good price.
It is a Nikasil-plated aluminium cylinder with increased displacement - 154cc instead of the original 125cc. This, as a matter of fact, results in slightly increased performance, especially regarding torque, and a wider rpm range. Renowned Italian manufacturer with one of the few kits with more than 125cc for this type of engine on the market.
The kit includes cylinder, piston, combustion chamber for cylinder head and gaskets (including spacers for adjusting squish); cylinder head cover is not included, keep original!.
Suitable for all 125cc Rotax 122 & Rotax 123 2-stroke engines, it is compatible with numerous 125cc sport bikes such as:
- Aprilia : AF1 Futura, AF1 Replica, AF1 Sintesi, Europa, MX, Pegaso, Red Rose (with Rotax 122-123 engine), RS, RS Extrema, RX, Sport, SX, Tuareg Rally and Tuareg Wind.
- HM : Derapage and CRE
How to Install a cylinder on a scooter, motorcycle or moped
The cylinder or cylinder kit is the heart of the engine on scooters, motorcycles and mopeds. It consists of a cylinder, a piston with piston ring(s), a cylinder head and gaskets needed for installation.
The service life of a cylinder depends on whether it has been fitted correctly.
Tuning Level: Racing
We categorize our products into different performance levels Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.
Racing products are designed for a more extreme uses and are developed primarily for racing. Whether you stay at 50cc or increase the displacement, the corresponding Racing parts produce much higher performance than the original parts in order to achieve maximum power.
Aluminium cylinders
Aluminium cylinders are more powerful than cast iron cylinders, but require more regular maintenance and must be combined with different components such as a reinforced crankshaft and a larger carburetor.
How to run in an aluminium cylinder?
Aluminium cylinders should be run in for about 200 kilometers , and you should use a fully synthetic engine oil.
Note: To ensure optimum performance and reliability, it is advisable to measure the squish clearance. Just have a look at our tutorial How to adjust squish clearance.
Spare Parts
- Polini
Piston Rings Polini 60x1mm (2x) Polini aluminium 152cc, Vespa Primavera 125cc ET316,50 €In stock soon17,00 €-3% Discount - Polini
Piston Polini d=60mm (B) Aprilia RS 125cc Rotax105,00 €In stock - Polini
Cylinder Gasket Set Polini d=60mm (incl. 3 cylinder base gaskets) Rotax 12314,50 €In stock - Polini
Piston Polini d=60mm (A) Aprilia RS 125cc Rotax105,00 €In stock - Polini
Piston pin circlip Polini, 15mm, Vespa PK 50/ V50 / ET3 / Primavera / PX80/125 / Rotax 1230,90 €In stock1,00 €-10% Discount - Polini
Small end bearing Polini, Rotax 123, 15x19x20mm8,40 €In stock12,50 €-33% Discount
