Ace AF1 Trucks - Matte Black "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." • Manufactured with high-quality AA 356.2 alloy using our own proprietary casting method • True T6 heat-treated baseplates and hangers • SAE 4140 steel alloy axles, oversized to eliminate bearing wobble. • Patent pending rethreading axle nuts - no more damaged axle ends! • Durable Hand-poured 96a urethane pivot bushings for better response. • Refined suspension for a cleaner turn. • Top Bushing: 12mm tall | 91a hardness • Bottom Bushing: Bottom 14mm tall | 86a hardness • Machine-faced hanger ends for precise bearing contact.