The all-new ACE AF1 features game-changing performance without deviating from our original Ace geometry. The AF1 is carefully manufactured using our proprietary casting process. Years in development, the ACE AF1 has a 70% increase in the aluminum’s structural integrity, making it the strongest cast truck on the market. We updated the sizing on the 44 thru 77 models for a better fit across multiple board widths. Ace Skateboard Trucks AF1 Black 55 (8.5" Axle) Pair