Fidlock RPC 2023 US 9 Fin

The Fidlock RPC 2023 US 9 Fin is a stand-up paddleboard fin designed to slot into the popular US-style fin box. It serves as a replacement or upgrade fin, helping your board track straighter and maintain stability through your paddle sessions.

This 9-inch fin is crafted to fit any SUP equipped with a US fin box, so installation and removal are straightforward. Its length provides a good balance between directional hold and maneuverability, making it suitable for cruising on flat water or light surf. By ensuring smoother water flow along the hull, it helps you stay on course with less corrective strokes.

The term “US fin box” refers to a standard fin attachment system found on many paddleboards. It consists of a long, narrow slot where the fin slides in and locks down with a set screw. The 9-inch measurement describes the distance from the fin’s base to its tip; a larger fin generally enhances tracking (straight-line paddling) but can slightly reduce the ease of turning.