This strengthened gas spring allows to quickly and safely store even the heaviest bicycles. Using this optional, the max load, otherwise self-limited to 21 kgs, raises to 28 kgs. Moreover, in case the flat-bike-lift is used with the optional extra-lenght, item XLE, it gives the extra power needed to win the weight increase due to the bigger distance between the swivel and the wheel rail, according to the equation 1 cm. = 0.32 kg.
