They are already available in Syncro System centers – they are the new and exclusive aluminum cross bars for roof racks, utility racks, and ladder racks. Thanks to long and extensive research by the design technicians at Syncro System, we have been able to greatly reduce the noise and wind drag. With Ultrasilent 4, there is a 20% reduction in both. Less weight means less gas consumption and the possibility to transport more cargo when needed. Increased aerodynamic properties mean less noise and vibration while on the road and even more gas savings. The high quality and superior technical construction that have ensured the success of the Ultrasilent system (the modularity, strength and upper rubber strips) have remained unchanged.