Naraku secondary gearbox Naraku Racing 15/37 +20% for GY6 125 150cc 152/157QMI - NK901.23

Who hasn't experienced this? Performance tuning with a big-bore cylinder has significantly increased the scooter's acceleration, but it doesn't get much faster. It usually stops at around 90-100 km/h. Replacing the variator still makes a difference, but the top speed is still not sufficient. The reason for this is that the original transmission's gear ratio is too low. In order for the relatively weak original engine to generate the required power, it has too short a gear ratio. Naraku offers a 20% longer transmission, which achieves the optimal gear ratio extension in tune with the power delivery of 4-stroke engines. With the Naraku NK901.23 transmission, your scooter will now reach a higher top speed without sacrificing acceleration. TECHNICAL DATA: - Naraku secondary transmission for scooters...