ACE TRUCKS Start rolling and get your hands on a pair of the Ace AF1 Hollow Truck Polished. The all-new ACE AF1 features game-changing performance without deviating from our original ACE geometry with hollow axles and kingpins. The AF1 is carefully manufactured using our proprietary casting process. Years in development, the 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. Specifically manufactured for precision turning, easy flow and smooth grinding. Features: -Hollow axles and kingpins - Manufactured with superior 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 smooth as silk response.- Refined bushing and cup washer shapes for a cleaner turn.- Machine-faced hanger ends for precise bearing contact. Sizing Chart: Size Board Size Axle Width Sizing Chart: Size Board Size Axle Width 22 7.75-8.0" 7.75" 33 8.0-8.25" 8.0" 44 8.25-8.5" 8.25" 55 8.5-8.75" 8.5" 60 8.75-9.0" 8.75" 66 9.0-9.25" 9" 77 9.25+" 9.5" Trucks sold individually. However, a skateboard requires 2 trucks. For a pair (2 trucks) please select Quantity 2.