Though the airline is strong, it makes sense to keep them away from sharp edges. Here the airline is routed from a front Shockwave; clamps are used to route it around brackets and prevent it from chaffing. While the plastic clips are fine in most situations, I used the rubber lined type at the end of the route, as there is a little movement in the airline since the ShockWave can rotate slightly on its mounts. I may also trim the lower edge of the upper spring cup (arrow) for clearance before final installation. There is a gap, but it's close, plus the fitting can swivel too.