Throttle Up CNC Stern Drive Propellers are available in pitches from 27P to 35P and up to 16.25" diameter. They are available in 4 Blade, 5 Blade and 6 Blade configurations. Although know for their top end these propellers produce great acceleration with handling that is unsupassed. Throttle Up Propellers, Manufactures the Worlds Finest, Strongest and Fastest Propellers in the high performance marine industry. Our CNC process is unlike any other process of its kind. We begin with the Purest of Stainless Steel, referred to as "Virgin". We then heat-treat the castings in house, to meet the demands of our customers. The propellers are machined in simultaneous multi-axis mills. In turn, manufacturing propellers that are exacting, thus creating a propeller with unsurpassed efficiency, therefore speed. From CAD to CAM to machinery, we utilize the most progressive software programs and equipment available, in the market today. 4 Blade configuration starting at $1100.00 Please call to order.