The 13 x 17 A4R by QuickSilver Nemesis boasts more cups for better acceleration and holding in action, as well as a tenacious grip in corners. Its low-diameter, high-rake design aids in maintaining top-end speed. The finest pontoon prop in the Quicksilver lineup, with additional holding and lift to help your pontoon perform better. Fits outboard engines with a big gearcase of 40hp to 60hp or a normal gearcase of 75hp to 125hp. For Honda Outboards: 15 tooth spline. Connect the hardware kit #835277Q1 for 75-90 HP up to 1998, #835279Q2 for 75-90 HP 1999 and up, and 115-130 HP all years with Flo-Torq II. Purchased separately. For Mercury/Mariner Outboards: 15 tooth spline. Use the Flo-Torq III hub kit #835257A9 with stainless steel props. Use Flo-Torq II connecting hardware #835257Q1 for 2-Stroke carb installations. To reduce chatter in 4-Stroke and Opti-Max applications, utilize the Flo-Torq III mounting hardware kit #835257Q9. Separately purchased. For Yamaha Outboards: 15 tooth spline. Hub Kit: For 50 to 100 HP applications, use Flo-Torq II connecting hardware kit #835272Q1, and for 115 and 130 HP units, use kit #835271Q2. Separately purchased. For Suzuki Outboards: 15 tooth spline. Use Flo-Torq II connecting hardware kit - #835283Q1 for 90-115 HP 2001-2008. Use Flo-Torq II connecting hardware kit - #835283Q2 for 100-115 HP 2009 and newer. Flo-Torq mounting hardware kit - #835283Q2 is recommended for 140 HP. Use Flo-Torq II connecting hardware kit - #835283Q03 for 70-90 HP 2009 and newer. For Tohatsu/Nissan Outboards: Flo-Torq Reflex Propeller Hub Kit Quicksilver kit #8M0053074 can be used to replace the present front and aft washers. Purchase each item separately. Key features: This propeller is a four-blade aluminum Propeller Rotation: Standard (clockwise) This Nemesis for boats powered by 25 HP 125 HP outboards Hub kit is not included, can purchase separately Specifications: Item Color: Black Diameter: 13 inches Pitch: 17 inches