Polini Cylinder Kit Polini for Minarelli AM6 Alu Race 80cc 2 piston rings
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Polini's most powerful kit for 50cc engines: Polini 80cc Cylinder Kit "Alu Race" Minarelli AM6. Manufactured by Gilardoni, famous for its high quality workmanship.
The cylinder kit includes an excellent ASSO piston, d=50mm, with 2 piston rings. The cylinder has 5 transfer ports and an exhaust port with additional boost ports. With a diameter of 50mm, displacement is exactly 79cc.
Please note that you'll have to adjust squish clearance when installing aluminium cylinders to get maximum power and reliability.
Diameter = 50mm / standard stroke = 40mm