Top Perfomances - a subsidiary of Minarelli - produces not only 2-stroke tuning cylinders, but also some tuning products for 4-stroke vehicles. Top Performances succeeded in taking up Minarelli's years of experience with Yamaha and producing high-quality tuning products. With this cylinder you can expect quality materials and best possible performance. If you decide on this cylinder kit, you will get your own CDI in addition to the pistons and gaskets. So the electronics of the injection and the cylinder can work together perfectly. Especially in the lower speed range the thick pistons provide a better pulling power.