Volvo Penta Trim Plane System

Volvo Penta
Price: $991.89
Part # 21914554
Price: $1,102.23
Part # 21914555
Price: $965.90
Part # 21561103
The Boat Trim System is a revolutionary patented system using vertical interceptor blades rather than the conventional plates. Thanks to the water intercept technology you get a smoother ride and more quickly onto the plane. Complies with CE and ABYC requirements. The main components of the system are:
  • Interceptor Units
  • Control Panel
  • Control Unit
  • Plug-in Cable Harnesses


Many factors affect the choice of properly sized trim unit configurations, and the ultimate responsibility for selection is up to the boat owner. These sizing recommendations are based on average performance. Your choice may vary based on power, engine configuration, weight distribution, type of boat and use. When making a choice, please remember that the largest interceptor configuration that will comfortably fit on the transom will be the most efficient. The Boat Trim System is designed to fully replace conventional trim tabs.


Sizing guidelines for planing hulls

For semi-planing hulls, it may be necessary to increase the length of the trim unit configuration.


Boat length, ft Single engine installation Twin engine installation
15-19 BTS300  
19-24 BTS300  
22-27 BTS450 BTS450
25-30 BTS450 BTS450
28-34 BTS450 BTS450
32-38 BTS300 x 2 BTS450
36-44 BTS450 x 2 BTS450 x 2
42-50 BTS450 x 2 BTS450 x 2


The kits come with a comprehensive installation guide which mean upgrading from conventional trim tabs is a small job.

300MM BTS Kit, 12"
Single installation with one helm station. BTS 300 mm kit includes:

  • 2 Interceptor Units, 300
  • 1 Control Panel
  • 1 Control Unit
  • 2 2.5m Cables
  • 1 5m Cable
  • Comprehensive Installation Guide
  • 450MM BTS Kit, 18"
    Single installation with one helm station. BTS 450 mm kit includes:

  • 2 Interceptor Units, 300
  • 1 Control Panel
  • 1 Control Unit
  • 2 4m Cables
  • 1 9m Cable
  • Comprehensive Installation Guide
  • Auto Trim Kit
    The Automatic Boat Trim option takes over the task of keeping the boat trimmed - automatically!
    Kit includes:

  • 1 GPS Receiver
  • 1 Attitude Control Unit
  • This product ships in 5 business days.
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    Standard Shipping Policies

    Please be careful when ordering this product, it has limitations that differ from our General 30-day Return Policy. After all, we want you to be satisfied with your order so you'll return again and again as an iboats.com customer, and to also recommend us to your boating friends

    Volvo Penta Store

    An item(s) may be returned within the first 30 days after the item(s) is shipped to you. Merchandise must be in new, unused condition with all original packaging in good condition; plus parts, accessories, manuals, and/or warranty cards included. You will need to receive a return authorization number (RA #) as well as instructions from our Customer Service Department.

    Warranty: Volvo Penta parts carry a (1) year manufacturers warranty. Should the part you received fail after install, take a copy of the receipt to an authorized Volvo Penta dealer for a warranty evaluation. If determined that the part failed due to a defect the Volvo dealer will supply a replacement part to the consumer. If needed the Volvo dealer could assist in installation of the new part at his normal labor rate. If you need assistance finding the closest dealer number please contact our Customer Service Department.

    See our complete return policy.