Front Subframe: Description and Operation

4009 Front-axle cross member (A)







The front-axle cross member (A) has been newly developed for the 911 Carrera. The design has been completely revised based on crash requirements, particularly in an offset crash. At the same time, the cross member has been widened by 15 mm on each side. This has allowed the axle attachment points to be moved out by 30 mm to widen the track.

In order to reduce weight, the casting procedure for the front-axle cross member was switched from die-casting to pressure casting. Pressure casting makes it possible to cast generally thinner wall thicknesses. The considerable advantage is that material can be applied with high precision according to the areas exposed to stress.