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Home > Bennett Trim Tabs

Bennett Trim Tabs

What size trim tab is right for me?

Many factors affect the choice of properly sized trim tabs, and the ultimate responsibility for selection is up to you, the boat owner. To help you decide, Bennett Marine offers you a few guidelines below. If you still have questions about the size you need, just contact us and we’ll be happy to walk you through it.

General Guidelines
These sizing recommendations are based on average performance. Your choice may vary based on power, engine configuration, weight distribution, type of boat, and use. The greater the surface area, angle of deflection and/or speed of the water flowing under the trim tab, the greater the lift.
When making a choice between trim tab sizes, remember that the largest trim tabs that will comfortably fit on the transom will be the most efficient.
As a rule, choose at least one inch of trim tab span (per side) for every foot of boat length. (Examples: 22-foot boat = no less than 24" x 9", 36-foot boat = no less than 36" x 9".

  • Span = side to side measurement
  • Chord = fore to aft measurement

    Whenever possible, choose a 9" chord trim tab, and gain lift through a longer span. The span of the trim tab has more of an effect on the amount of lift. However, a longer chord can be used effectively, and there are situations where you may need to use a 12" chord.

    Measuring
    Choose the approximate tab size for your boat using this sizing chart. Make sure the tabs will fit your transom using the diagrams below as a guideline. When measuring, disregard the strakes and follow the Vee of the hull.


    Bennett Sport Tabs M80 & M120
    Bennett Sport Tabs M80 & M120

    Bennett Rocker Switch - Euro Style
    Bennett Rocker Switch - Euro Style

    Bennett High Speed Sport Tab
    Bennett High Speed Sport Tab

    Bennett Standard Trim Tabs
    Bennett Standard Trim Tabs

    Bennett Trim Position Indicator
    Bennett Trim Position Indicator



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