Hot Racing adjustable Trim Tabs for the Spartan Race Boat. FEATURES Adjusts angle of Trim Tab assembly for proper hull planing during acceleration CNC Aluminum adjustable plates Pre-drilled for mounting Blue Anodized INCLUDES Two Adjustable trim tabs SPECIFICATIONS: Weight: 0.78 OZ length: 48mm (1 7/8) Width 29mm (1 5/32) REQUIREMENTS Installation (no modification for the Spartan boat) Comment Use the stock 4x12 screw to mount the Aluminum Aujestable Trim Tab Set