Description
Malossi Cylinder 66cc H2O Yamaha Aerox / Neo's 4-stroke Euro 4, aluminium tuning cylinder for vehicles with 50cc 4-stroke Minarelli engine (Yamaha Aerox and Neo's / MBK Nitro and Ovetto).
The top quality aluminium cylinder has a displacement of 66.3cc (44mm bore), with original stroke (43.6mm) and a compression ratio of 12.01. Like most aluminium cylinders, the bore is coated with a friction and wear reducing Nikasil liner. The piston is a high-quality model - light and reinforced, with excellent thermal properties.
Increasing the displacement of a 4-stroke engine will mostly be noticeable in higher torque and consequently better acceleration and take-off. It is the perfect choice for pilots who feel that their 4-stroke scooter is a little too "sluggish" and are looking for quicker response.
Note: the cylinder has to be used in combination with Malossi's Force Master CDI unit. Here's the guidelines issued by Malossi:
- Malossi 5518370 for Euro 4 engines (Yamaha Neo's / Aerox)
- Malossi 5518429 for Euro 2 engines (Yamaha Neo's / Aerox / Giggle / Zuma)
The cylinder comes with piston and gaskets, the cylinder head is not included, though, please re-use original head.
Not street-legal (depending on your country's regulations).
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: Sport
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.
The products listed under Sport yield better performance than Original parts. They may have technical differences, such as the use of higher quality materials, a larger displacement or a performance-enhancing design. They are suitable for everyday use and have a long service life.
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.