Stiletto Boat Propellers
Superior Blade Design
All Stiletto Propellers are of a progressive pitch design. Cupped blades help reduce the chance of cavitation, therefore, increasing the efficiency and performance of your engine.
Total Performance
Stiletto Propellers are designed to help each boat and engine combination achieve its peak performance at all throttle levels: low end, mid-range, and top end. Stiletto Propellers are designed to outperform the mass produced aluminum and stainless steel stock/utility propellers. The outer hub is vented to allow some of the exhaust gases to escape preceding each blade. This helps eliminate performance robbing vacuums that occur behind the blades. Stiletto props are made in the USA.
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TRIAD Propellers
TRIAD I Propellers TRIAD II Propellers TRIAD Propellers + Guardian HubSTAR Propellers
STAR Propellers STAR Propellers + Guardian Hub |
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ADVANTAGE Propellers
ADVANTAGE I Propellers ADVANTAGE II Propellers ADVANTAGE III Propellers ADVANTAGE Propellers + Guardian Hub ADVANTAGE Q Propellers + Guardian HubBAY PRO Propellers
BAY PRO I Propellers BAY PRO II Propellers BAY PRO III Propellers BAY PRO I Propellers + Guardian Hub BAY PRO II Propellers + Guardian Hub BAY PRO III Propellers + Guardian HubPRO 4 BASS Propellers
PRO 4 BASS Propellers |
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Guardian Hubs
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Just start typing characteristics about your boat's engine. You can type in horsepower, model name, liters, year, etc.
Possible engine matches will be displayed below your search query. Keep typing to further narrow the list. Once you see the engine that most closely matches yours, select it using your mouse or the up/down arrow keys.
Select the pitch & rotation of propellers you wish to see, then click "Find Prop"
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Look on the outer hub of the prop near the blades or inside the hub. Most props are stamped with a series of numbers. Pitch is always the last number listed. Example: 3 x 16 x 24.5R 3 - Number of Blades (occasionally displayed) 16 - Diameter 24.5 - Pitch R - Direction of Rotation (R = Right/Standard, L = Left/Counter) |
Pitch is stamped on the outer prop hub...
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...oraround the inner hub. |
Props spin either clockwise (standard or right-hand rotation) or counter-clockwise (counter or left-hand rotation).
Most single engines use a standard rotation prop. Most twin engines use one of each.
To determine what prop rotation you have, look at your prop as if on a boat. Position a blade pointing straight up. If the right-hand side of the blade is closer to the boat than to you, it's a standard rotation prop.
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Props are often stamped with both dimensions and a part number. Look on the outer hub of the prop near the blades or inside the hub. Numbers similar to 15 x 17 are the prop dimensions (diameter & pitch). Those numbers are not your part number! Part numbers resemble 031018, 48-11320A40, 2231-103-12, etc. |
Look around the inner hub or on the blades.
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15 1/2x17 is not the propeller part number!
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Volvo Penta DuoProps have a front and rear propeller that rotate back to back on the same drive. The front propeller is closest to the boat and hits the water first.
DuoProps have both a counter and standard rotation prop to eliminate steering torque. The front prop is always counter rotation. The rear prop is always standard rotation.
Volvo Penta DuoProps are each stamped with a size code (D2, F5, T9, etc) that is used to find a prop replacement. With this code you can replace either the front or rear pieces, or the complete DuoProp.
Propeller Basics
How To Choose A Prop Diameter Pitch Cupping Rake Ventilation Cavitation We tell you everything you need to know about props from cupping to ventilation. |
Prop Characteristics
3 Blades VS. 4 Splines Aluminum vs. Stainless Steel Performance Exhaust Left-Handed Props FAQ If you want to modify your boat's performance, consider the above before making your selection. |
Determining RPM's
Effect of pitch on RPM Test for Maximum RPM For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer. |
