Description
Polini Motor Pack: Cast Iron Cylinder + Crankshaft with Bearings AM6
This Polini tuning kit for Minarelli AM6 engines offers the ideal combination of power and reliability for daily use. By combining cylinder, reinforced crankshaft and high-quality bearings, you get a perfectly matched package that noticeably improves acceleration and pull of your 50cc supermoto / enduro bike. The kit is the first choice for anyone looking for a torquey setup that convinces with durability both in everyday riding and under more intensive use.
Top Performance: Polini 80cc Cast Iron Cylinder
The Polini Sport 80cc (exactly 76cc) is one of the most powerful sport cylinders for AM6 engines. Made from robust cast iron, it stands out with excellent heat and wear resistance. With 5 transfer ports and an oval exhaust port including boost ports, it delivers sharp performance especially in the mid rpm range. In combination with a 19–24mm carburetor and a sport exhaust, outputs of around 13–14 hp are possible – ideal for wheelie fans and all riders who value high torque.
Reinforced Drive: Polini For Race Crankshaft and HQ Bearings
To reliably transmit the increased power, the kit includes the reinforced Polini For Race crankshaft with a durable CNC-machined connecting rod. This crankshaft is developed specifically for tuned engines up to 80cc. Matching this, the kit includes the Polini bearing set with NTN C4 main bearings and special Viton oil seals. These HQ seals are polymer-coated to minimize friction and wear, and offer extremely high thermal and chemical resistance for maximum security in your engine.
Contents Polini Tuning Kit:
- Polini Sport 80cc cast iron cylinder kit (d=50mm) with 5 transfer ports
- High-compression cylinder head and 2-ring piston
- 2x carbon reed petals for the original reed block
- Reinforced Polini For Race crankshaft with CNC connecting rod and silver-cage bearing
- 2x NTN C4 crankshaft bearings (6203, 17x47x14mm) - Journals: 17/17mm
- 2x Viton oil seals (17x35x8mm and 24x35x7mm) with polymer coating
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.