The Dynafit U-Fork SL175 in Z8 is the stiffer heel fork for the Superlite 175 binding, raising the vertical release band above that of the Z6 version. Swapping the fork is how the same binding becomes the higher release model.

• Higher release band than Z6: Z8 is the stiffer spring, and fitting it raises the vertical release band of the heel.
• Turns the binding into the higher version: on the Superlite 175 the fork is what distinguishes the two release variants.
• Superlite 175 specific: never fit it to a Superlite 150, whose forks are a different part.
• Sold in pairs: one per ski.