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Orca Performance Fin

Orca Performance Fin

Uncle Norm's Marine Products

  • $ 28900

Add No-Drill Clamp set? ($69)

The Orca-Performance Fin triples the effective rudder area providing a tighter turn radius and sharp crisp directional control at any speed. The larger surface area of the Orca-Performance Fin blocks cavation better than hydrofoils while adding the benefit of enhanced slow speed maneuvering and heading control. The Orca-Performance Fin installs in minutes without drilling using the 45M-Clamp kit or bolt directly to the cavitation plate using included hardware. The Orca fin is usually mounted with the fins down but may be installed fins up without modification if you desire less aggressive control. Used and tested on fishing boats, runabouts, pontoon boats, cruisers, ski boats and bass boats since 2002.


  • 3x the Steering Control
  • 2x the Turn Rate
  • 3x the Effective Rudder Area
  • Get on plane faster
  • Prevents Cavitation
  • Maximizes Thrust Resulting in Improved Engine Performance
  • Reduces Bow Rise
  • Improves Visibility



  • Black Powder Coated Aluminum
  • Designed for boat motors with propellers up to 16 inches in diameter
  • Use on outboard and I/O engines up to 300HP (Not recommended for the Volvo with exhaust through cavitation plate.)
  • Compatible with autopilot systems
  • Simple installation
  • Patent Pending
  • Made in USA

    No-Drill Clamp Kit (Optional)


    No holes to drill when mounting the Uncle Norm's Fins with the No-Drill Clamp Set. Works on most outboard and I/O stern drives up to 300 HP. It's simple, fast and effective. Aluminum construction and powder coated for good looks and durability.

    • Designed to be Used with the Orca-Performance Fin and Dolphin-Trolling Fin
    • No Holes to Drill in the Motor
    • Machined from Solid Aluminum Bar Stock
    • Stainless Steel Hardware Included
    • Black Powder Coated Finish
    • Installs Quickly with Minimal Tools
    • Can Be Removed in Minutes
    • Simple Instructions
    • Made in USA




    In Use Pictures

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      Customer Reviews

      Based on 24 reviews
      Hoping your right

      Haven't installed yet, am going to use on the Nehalem Bay, will let you know when I get the boat I. The water later on.

      Bow wandering

      Installed Orca fin on 21ft pleasure boat, worked great. Took all the bow wandering out at low idle speeds, no more fighting the streering wheel to hold coarse at 2 -5 MP. Had the hydrofin on boat and after a year it cracked so i went with the Orca fin from Uncle Tom and it works just as well getting boat on plane faster, grate for skiing and tubing, much tighter turns at any speed. Works in reverse, hardly know its there.
      Would highly recommend if you are haveing issues with bow wandering or getting the hole shot.
      Love it, little pricey but worth it. Purchased no drill install kit.

      Rick, We hear a lot of those stories. I'm glad that you are pleased. The fins really do work to solve a number of problems.
      Orca success

      Fit like a glove...pre-drilled holes fit perfectly with pre-existing holes on cav plate...drilled two others no problem and worked lerfectly today...steering benefited and hole shot was effortless.

      Outstanding trolling plate

      I ran a dolphin fin/plate on my 50 HP Honda for five years trolling for salmon on the great lakes. Fabulous device. Helped my autopilot do it's job more efficiently just as the manufacturer advertised. Recently installed an Orca on my 90 HP Honda and I'm sure that the orca will perform just as well as the dolphin did. BRAVO Uncle Mickey.

      Orca Fin

      Came on time . Appears to be of high quality. I will be installing it in the spring on a Parker 25/20 Yamaha 250 4 stroke outboard .