Trim Base Fins

Windsurfing Fins, check out our huge selection of True Ames, Select Fins, Bic and more in Trim box options. In-line and closeouts, save big! Windsurfing fins influence board and sail compatibility and performance. Matching fin design and size to your board, sail size and sailing conditions will optimize windsurfing performance. A fin generates lift as it travels through the water, while your sail does the same when harnessing the wind. Balancing these lifting forces affect control and performance of your board. Too large of a fin can cause excessive lift and drag. Too small of a fin contributes to poor planing and cavitation (spin-out). Cavitation feels like your fin is no longer attached as your board slides sideways at high speed. This page features Fins with Trim box type bases.

Trim Base

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  1. Select Hydrofoil Ride
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    Ideal performance fin option for BIC boards with trim box system. Learn More

    Starting at $165.00

  2. Epic Gear Fin Bags
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    Individual padded slots protect your fins. Deluxe size holds the biggest fins in your stash. Learn More

    Starting at $48.00

  3. M6 A4-CHC Stainless Fin Screws
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    Allen Head Stainless 6mm fin screws with stainless & rubber washers. Sold in individual sizes only! Learn More

    Starting at $2.55

  4. Chinook Fin Screw M6 Stainless
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    6mm Fin Screws for all boards, each screw is shipped with a stainless and a neoprene washer. Learn More

    Starting at $4.55

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