Cylinder Kit MXS Racing MXS Racing Sport 70cc piston pin=10mm Yamaha BW's / Slider
incl. tax, plus shipping
Description
Cylinder kit MXS Sport 70cc aluminum Minarelli vertical
Sport 70cc cylinder kit from MXS Racing (racing division of Maxiscoot). The MXS 70cc cylinder has 7 transfer ports and an oval exhaust. It is made of aluminum and the sleeve is Nikasil-coated. The cylinder kit comes with a 1-ring piston with 10mm piston pin and the specially developed high compression cylinder head.
The cylinder is similar to the MXS Racing cylinder, but has lower port timings, which provides more torque and traction in the mid RPM range.
Performance MXS Sport cylinder
To exploit the full potential of the cylinder, we recommend a 17.5-21mm carburetor and an entry-level performance exhaust. We recommend a Yasuni R, Bidalot S3R, Doppler S3R or a Yasuni C16 exhaust. However, the cylinder also works very well with inconspicuous exhaust such as Yasuni Eco (YASE20) or Tecnigas Silent Pro (TG0307376) due to the low stall time.
With the right engine setup, this tuning cylinder can achieve up to a whopping 16 hp!!!!
The cylinder is of course supplied with all the parts required for installation. To achieve maximum performance and durability, it is important to measure and readjust the squish clearance.
Contents MXS Sport 70cc
- 70cc aluminum cylinder with Nikasil coating
- 1-ring piston with 10mm piston crown
- High compression aluminum cylinder head
- Stud bolt for exhaust assembly
- Gasket set

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.
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.
Cylinder Kit MXS Racing MXS Racing Sport 70cc piston pin=10mm Yamaha BW's / Slider | |
---|---|
Article no. | MXS31446476 |
EAN | 4051272327827 |
Weight | 1,31 kg |
Brand | MXS Racing |
Product type | Cylinder kit |
Tuning level | Sport, Racing |
Displacement | 70cc |
Homologation | No |
Piston pin | 10 mm |
Cylinder material | Aluminium |
Bore | 47,6 mm |
Stroke | Original |
Conrod length | Standard |
Spark plug thread | M14 short |
Big valve stage 6
Vario mhr team
Carbu 19 pwk
Pot yasuni z
Clavette décalé et cdi débrider