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Orca Performance Fin with No-Drill Clamp

Orca Performance Fin with No-Drill Clamp

Uncle Norm's Marine Products

  • $ 32200
  • Save $ 2800

PN: 45103
UPC: 810009490227

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 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.
  • 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 (included)


    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 4 reviews
      Dan Kanera (Savage, US)
      Better than expected

      Love the no drill option. I was not going to drill holes in my outdrive. Period. I hated the wandering at low speeds. It's gone. Totally different low speed driving experience. Very noticeable increase in steering around the dock and lift. Added bonus is more reaction from small adjustments to trim up/down. I did not know I could love my boat more! Oldy but a goody. 1998 Mariah jubilee. 24' 350 mag with alpha 1 merccriuser. Holds 14 people goes over 40 mph and handles like a 19 foot runabout. Love love love the orca!

      Lee Windham (Boardman, US)
      Orca Performance Fin and No Drill Mounting Clamp

      Purchased in May 2021 and received very well packaged. My stern drive is an OMC 800 powered by a 350cid Chevy V8. The No Drill Clamp did not work with my application and I mounted the the Orca Performance Fin as a totally custom application. I probably should have sent it all back but being a very capable shop guy I chose to use the fin with my personal modifications....cutting a 4.5" diameter hole to fit around the trim fin above the propeller. I also mounted the Orca Fin below the cavitation plate....it fits very nicely and clears the prop but is close. I will send a few phots of the installation in days to come. Very impressed with the quality of the products I received....thank you

      Havalina (Mendon, US)
      It is great.

      I just put it on my 250 Verado, and it works great. The boat no longer drifts at idle as long as the motor is straight. My turning radius has tightened. I bought this one, because I love the smaller one for my kicker.

      David Gualdoni (Elburn, US)
      Orca fin

      I bought this fin for my 24 ft pontoon boat hoping that it will help with my turning and cavitation problems. We will find out once the weather breaks.