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 GY6 50 Polini 4T 70cc Cylinder Kit GY6 70cc Polini High Performance Racing Cylinder KitThis kit comes with aluminum cylinder along with piston and rings plus gaskets. Great quality kit if you want the best this it and works seemesley for Kymco 4T scooters such as People S 50 and Agility 50 giving them power to handle today's city traffic. You can also use this kit on all 139QMB engines from SYM, Kymco, QLink, Filly 50 as well as other chinese scooters with 139QMB engine. A large valve head and exhaust as well as carb or jet plus air filter can be added for an all around upgrade with speeds to 50mph. Kit is 47mm which makes it 70cc and is top of the line kit. Get this kit along with a NCY 50mm heand and you create a nice large compression chamber that will give your scooter the extra power you are looking for plus the fact that it is a aluminum cylinder kit means it keeps cool longer and will perform better than iron cast cylinders. This is a great example of quality parts for GY6 50 upgrades. For both Kymco models and straight GY6 50 models we have NCY CDIs and SRC CDIs that get rid of limit on rev timing and really get the power from this kit. |  | 48 Lower States Only
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