Wheel hubs are a great tuning device that can be changed quickly and easily. Use a shorter hub to gain grip and get the kart to 'come on' faster or use longer hubs to get the kart to 'come off the corner' better. Use wheel hubs to gain in different areas to axles and as a way to get an in between axle grade change when needed.

WH3035
WH3080
WH3050-------