Description K-DRIVE MALOSSI Malossi K-DRIVE is a lighter transmission ratio than the original for Yamaha Tmax 530 - 560. /> Sprocket 6118805B Z 25 6118804B Z 27 6118814 Z 28 6118815 Z 29 Crown 6118806B Z 60 TECHNICAL FEATURES The pinions are made of aluminium, with hard oxidation 25 microns deep. With this treatment Malossi has maintained a particularly light geometry of the piece guaranteeing great resistance to wear. The central hub is built with a particular alloy steel, not heat treated so as not to increase too much the hardness and therefore avoid creating problems in the drive with the engine transmission shaft. The following toothings are offered: 25, 27, 28, 29. COUPLING TABLE CROWN - K-DRIVE PINION Sprockets Crowns Ratio % Ratio 25 60 2,400 - 5.8% 25 59 2,360 - 4.0% 25 58 2,320 - 2.2% 26 60 2,308 - 1.7% 25 57 2,280 - 0.5% 26 59 2,269 Original 2,231 + 1.7% 27 60 2,222 + 2.1% 27 59 2,185 + 3.7% 27 58 2,148 + 5.3% 28 60 2,143 + 5.6% 28 59 2,107 + 7.1% 28 58 2,071 + 8.7% 29 60 2,069 + 8.8% 28 57 2,036 + 10.3% 29 59 2,034 + 10.3%