Armstrong Tail Trim Fairing

The Armstrong Tail Trim Fairing is a honeycomb titanium shim designed for use with Armstrong hydrofoil systems. Often referred to by the abbreviation TTF (Titanium Trim Fairing), this small but functional hardware piece mounts between the fuselage and tail wing to adjust the stabilizer's angle of attack. Armstrong offers the Tail Trim Fairing in three angle options — -2 degree, 0 degree, and +1 degree — each influencing how the rear wing interacts with the front wing and overall foil setup. The fairings are tool-swappable, letting riders experiment with trim angles on the water or between sessions without modifying any other component.

• Material: Honeycomb titanium
• Available angles: -2°, 0°, +1°
• Compatibility: Armstrong UNI Tail Wing, HS232 Tail Wing
• Sold: Individually (one fairing per purchase)

The Armstrong Tail Trim Fairing suits any rider on the Armstrong foil platform who wants to fine-tune rear wing behavior for different conditions, disciplines, or progression stages. The -2 degree option adds tail downforce, which increases front wing lift at lower speeds and improves yaw stability — making it a practical choice for beginners, heavier riders, those on larger boards, or windsurf freeride setups. The 0 degree fairing provides a neutral baseline that pairs well with higher-speed kite or tow-surf use on smaller front wings like the CF800, and serves as a balanced all-around setting with mid-size wings such as the CF1200 or CF1600. The +1 degree option reduces tail downforce for greater top-end speed control and improved pump efficiency, aimed at advanced riders focused on downwind foiling or maximizing glide.

Because the fairings are inexpensive relative to other foil components, many riders keep multiple angles on hand and swap them to match the day's conditions or their evolving skill level.

The Tail Trim Fairing sits within Armstrong's hardware and accessories catalog alongside items like mast bolts, fuselage shims, and wing screws. It is not a generational product that replaces a predecessor — it has remained a consistent accessory in the Armstrong ecosystem as long as the brand has used its current rear wing attachment system. The TTF is specifically engineered around Armstrong's UNI Tail and HS232 Tail wings and is not cross-compatible with other brands' stabilizers. Riders building or expanding an Armstrong foil quiver will typically encounter the TTF as one of the first tuning accessories recommended after selecting a front wing and fuselage length. Comparable shim systems exist from other foil brands — Axis and F-One both offer tail wing shim kits — but the Armstrong TTF's honeycomb titanium construction and specific angle increments are unique to the Armstrong platform.