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Orca Performance Fin

Orca Performance Fin

Uncle Norm's Marine Products

  • $ 19900
  • Save $ 9000


PN: 45100
UPC: 810009490234

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 cavitation better than hydrofoils while adding the benefit of enhanced slow speed maneuvering and heading control.

" Your ORCA FIN WITH THE CLAMP MOUNT is an amazing product!!! My crestliner discovery 1450 with a 40 Mercury outboard had a serious problems with HIGH BOW RISE to where I couldn't see in front of me and the boat would not plane, even at full throttle. The ORCA FIN was added to my boat along with a 4 blade propeller and both problems are gone. There is virtually no bow rise and the boat planes almost immediately!!!! This video truly shows the effectiveness of the ORCA FIN. Thank you! -Thomas


The Orca-Performance Fin installs in minutes without drilling using the 45M-Clamp kit or bolts 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.


Recommended for motors from 80 to 300 Horsepower with up to a 16" Diameter Prop


  • 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.
  • Made from 3/16" 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


      Customer Reviews

      Based on 41 reviews
      Ross Smith (Fountain Green, US)
      Big Help

      This was a big help minimizing the wander on my Rinker 250. Not entirely cured, but a big help

      Cory Mayo (Lewes, US)
      What a difference

      I own a 20’ Bayliner Trophy 2002. The steering wandered to the point I was about to sell my boat. After some research I came across this fin. It is expensive for what it is, but it did completely fix all my issues. I highly recommend

      Kerry Malone (Denham Springs, US)
      Orca Performance Fin works but not perfect

      I had trouble with my Chaparral Sunseta 210 wandering at slow speeds and abrupt jerky steering at faster speeds. It was a nightmare to load on the trailer. With the Orca Fin trailering is much easier and the overall steering is much better. It goes dead straight at speed with no hands on the wheel. The down side is I lost a couple of mph top end and there is a good bit of water spray in the boat unless you're trimmed just right. The water spray is a pain for whoever is sitting in the back of the boat but it's worth it to not have to make a dozen runs at the trailer to load it.

      James Cline (Fort Walton Beach, US)
      Works as advertised

      I had an issue ordering an Orca Fin, so I contacted customer service via email. The reply was very prompt, w/in 30 mins, on a Friday no less. The fin arrived 2 weeks ahead of projected shipping date also, which was a wonderful bonus. The fin was easy to install, instruction were very concise. My boat is a 19 ft skiff which was very slow turning at slow speeds, especially idle. The fin fixed that issue immediately, making me not look like a new guy every time at the ramp. I don’t remember this being a selling point, but the fin also makes the boat more responsive when trimming the engine, requiring smaller increments to notice a response. As far as reduced wake?... couldn’t
      say. Does it work as they advertise? Yes. Are the changes made worth $300 (plus the $50 shipping)?... ehhh, for me it was. I’ve recommended the Orca Fin to 3 other boat owners so far, one of those being my mechanic who asked me about it. Very satisfied with the entire experience.

      BG (Sandpoint, US)
      Love it...

      I have a 2001 Milan and it was totally squirrelly at low speeds before I installed the Orca. It handles so much better now. Well worth the purchase if you are experiencing the same problem.

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