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 About DuoProps
DuoProps are two propellers that rotate back to back on the same drive. When you select a DuoProp, both the standard and counter rotation pieces are included. The design of DuoProps provides several advantages over single propellers. They eliminate steering torque, increase efficiency, decrease blade damage from cavitation, and improve performance. Aluminum vs. Stainless Steel Props
Aluminum
Aluminum props are a great choice for small and medium sized boats. They are inexpensive and under normal conditions can last for many years. When running your boat in an area where striking the bottom is likely, aluminum blades can flex, helping prevent damage to your engine.
Stainless Steel
Stainless steel props are ideal for large or heavy boats and boats running in saltwater. Although more expensive than aluminum, stainless steel props are more durable and will last longer. When running your boat at speeds over 50 mph, stainless props will perform better than aluminum.
 Propeller Help Guide
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- Current Propeller Specials -
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Propeller Help Guide
  
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iboats.com Exclusives
Manufacturer Showcase
Propeller Help Guide
Propeller Basics
Diameter Pitch Cupping Rake Ventilation Cavitation How To Choose a Prop We tell you everything you need to know about props from cupping to ventilation. 
Prop Characteristics
3 Blades VS. 4 Left-Handed Props Performance Exhaust Aluminum vs. Stainless 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. |
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Please be aware of the following order dates below to have your items have the best chance of delivery by December 24. Shipping options apply to in-stock items only, and not made-to-order products such as boat covers and bimini tops. Mail handlers are extremely busy this time of year, therefore we cannot guarantee delivery before Christmas of any items. For the most up-to-date shipping information, please refer to the estimated delivery time specified in the shopping cart and checkout process.
HOLIDAY ORDERING CUTOFFS
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Save Use promo code BLKFR09 to save extra 5% Off
(Sale good thru 29Nov09. Excludes outboard engines, power units, inflatable boats, and gift certificates) |
Boat Cover Sale - Boat Covers - PWC Covers - - Bimini Tops - On Sale
Hurry, last years’ sale sold out in 4 hours! Plus this year we have select Bimini Tops too!
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If you need a quality cover and are willing to have a slightly odd fit or extra flap or two of fabric, one of these odd-lot covers may be ideal for you. These covers are in a variety of boat styles, lengths, colors and fabrics and can make a good, useable storage cover for a boat of similar or smaller size. (Sorry, no returns)
