On the other hand, a narrower track ensures greater grip on exiting, but, since it generates a lot of load transfer, you need to be careful that it does not make the kart understeer too much. In practice, you could say that a wider rear track tends to result in increased stability during braking, with the risk, however, of losing a little traction on exiting bends. When doing so, the rear axle softens, reducing grip on the supporting rear wheel. The other aspect is the length of the axle section between the outer bearing and the hub, which increases when the track is widened. This entails transferring load to the wheel itself, causing the internal rear wheel to lift and, therefore, loading the front axle and making the kart understeer. The first is the centrifugal force directed towards the outer front wheel, which is higher the wider the track. The width of the rear track determines two important aspects. The measurement can be varied by modifying the hubs and the axle. This is the width of the rear axle, always measured from the outer edges of the rims.
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