Cylinder 2Fast 86cc 50mm / stroke=44mm Minarelli LC
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This product is no longer being manufactured, so unfortunately we can no longer offer it.
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Description
"2Fast" - a name that stands for excellent performance! 2Fast 86cc Cylinder Kit (44mm stroke / 50mm diameter) MBK Nitro / Aerox (Minarelli horizontal LC), also available as tuning kit (cylinder kit + crankshaft), only for Minarelli engines.
These cylinders differ from the "old" 47.6mm ones regarding several features:
- Exhaust port is divided and bridged (no auxiliary boost ports)
- Transfer ports were redesigned to match the new size
- 50mm piston with 13mm pin (HQ Malossi piston Big Bore 86cc)
- Designed for 90mm connecting rod, new cylinder head shape, etc..
It has to be used with crankshafts with 44mm stroke, a 90mm connecting rod and a 13mm piston pin (small end bearing 13x17x17.5mm). Definitely one of the most powerful cylinder kits available in this category, since it will give you 25/26hp out of the box, without any modifications!
To unlock the enormous potential of this kit, we recommend combining it with a 30mm carburetor (minimum), a digital internal rotor ignition and a "Hyper Racing +70cc" exhaust (the "2Fast 86cc exhaust" is probably the best exhaust to go with this kit).
Technical features:
- Cylinder aluminium 44mm stroke / 90mm conrod (bearing 13x17x17mm)
- 6 transfer ports
- bridged exhaust port
- cylinder head aluminium w. 2mm clearance
- 1-ring piston 50mm, piston pin 13mm
- flexible exhaust connection (2 or 3 screws)
- compression 1:16
NOTE: you'll have to mill in the crankcase to make room for the cylinder base and the long-stroke crankshaft (instructions in manual). You will also need 100/101mm long cylinder studs.
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.