It’s often difficult to choose which bar to mount. There are many typologies and they differ both in terms of material – and thus hardness - and section, which changes their roll capacity. It’s common to choosing a compromise that improves the kart’s overall setup.
Under the Manetti Motorsport team tent, however, we noticed a totally different system: a bar mounted on uniball bearings. Alessandro Manetti, two-time karting world champion and current team manager, has studied this solution to exploit the hardness of the bar during braking, and, at the same time, discharge the engine’s power downward during acceleration. Because if the bar behaves in a traditional manner while entering a turn, when you exit the turn and the chassis requires greater “freedom,” the uniball bearings enter the fray and cancel out the effect of the hard bar.
The system is suggested especially in the various single-brand categories, where power is reduced and having a sufficient supply upon exiting a turn is fundamental.

Seen under the tent of the Manetti Motorsport team, at a WSK Super Master Series race at Adria