Description
Cylinder kit 2Fast 50cc Minarelli AM6
Tuning specialist 2Fast has long been known for its exquisite high-performance parts in the 70cc to 100cc range, now the brand is entereng the 50cc class with its first 2Fast 50cc cylinder, here for Minarelli AM6 engines. Just like its more powerful siblings, this "small" 2Fast cylinder delivers maximum performance and flawless workmanship - true high-end engineering at its best.
Design and performance 2Fast 50cc cylinder
The 2Fast 50cc AM6 cylinder is a high-end aluminium cylinder with a durable Nikasil coating, complete with a CNC-machined blue anodized cylinder head in classic 2Fast style. It comes with a 1-ring piston featuring a racing-oriented domed piston crown, perfectly matched to the high-compression racing combustion dome.
5 large transfer ports in the signature performance-oriented 2Fast layout, precisely calculated port timings and a generous exhaust port with twin boosters ensure explosive performance. With the right setup (large carburetor, digital internal rotor ignition, high-end racing exhaust), this kit can deliever amazing results. The use of a reinforced crankshaft is mandatory.
Recommended squish clearance is 0.6 mm, the kit includes 5 different thickness base gaskets to get the perfect value.
It can be used with a 2-bolt flange (50mm bolt spacing) or 3-bolt flange (47mm bolt spacing). Note: the flange is not included!
Technical data 2Fast 50 Racing cylinder AM6
- 50cc aluminum cylinder
- Bore: 40 mm
- 5 transfer ports + exhaust port with boost ports
- Stroke: Original
- Modular cylinder head with direct-flushed combustion chamber
- 1-ring piston, 12 mm piston pin
- Incl. gasket set with 5 base gaskets (for squish adjustment)
- Can be installed with 2- and 3-hole flange
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: High End 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.
High End Racing products are exclusively designed for racing and should only be handled by tuning pros with the appropriate technical know-how. High-end racing parts often require modifications or machining of certain elements to accommodate the often larger components (larger crank webs, larger intake, etc.). Whether you stick with 50cc or increase the displacement, high-end racing parts offer much higher performance than the original parts and are the most powerful tuning parts.
Note: To ensure the reliability of the engine, it is important that the parts are compatible and that you do regular maintenance on your two-wheeler.
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.