One of the easiest ways to give your bike snappier acceleration and increase its power is a simple sprocket change. It boils down to the gearing ratio. Simply put, the gearing ratio is the ratio of teeth between the front and rear sprockets, which determines how engine RPM is translated into wheel speed. By changing the sprocket size, be it front or rear, the gearing ratio can be changed accordingly.
For our customer’s KTM Duke 390, we used the KTM Powerpart rear sprocket, which promises the ultimate in quality and performance. Featuring high-strength alloy, the KTM Powerpart rear sprocket has at least three times longer service life than other aluminium rear sprockets. And that’s not it… Besides being joined together permanently with high-strength rivets, it is only half as heavy as conventional steel rear sprockets.
We also replaced the front sprocket, DID X-Ring chain and bikers chain guard. With wear resistance being twice as long, the DID X-Ring chain is recommended for reducing power loss and friction. Unlike normal O-Rings, the DID X-Ring chain twists between the sides plates instead of being squashed. This twisting action of the X-Ring disperses the pressure and minimises power loss. The X-Ring’s four contact points also greatly increase its sealing performance and keeps the dirt out and the lubrication in much better than any other O-Ring.