Super lightweight truck with forged baseplate and hollow axle & kingpin. 10% lighter than Stage XI. 53.5mm tall for optimal performance and wheel clearance with wheels 54mm and under. A356 T6 Aluminum Hanger for the best lightweight aluminum alloy heat treated to T6 condition for strength, durability, and grind feel. Forged 6061 Aluminum Baseplate. Aircraft-grade forged aluminum allows a thinner part while still maintaining high density and strength. Hollow Chromoly Axle & Kingpin. Highest quality hollow Chromoly steel for durability and weight saving.