Unequal Technologies Gyro 2 Football Helmet Liner — Concealed 1/4" Impact‑Dispersion Insert with Tridur Aramid & Aircor Foam

The Unequal Gyro 2 is a concealed supplemental helmet liner that drops into football helmets to add military‑grade, impact‑dispersion padding without changing the helmet’s exterior profile.

The Gyro 2 from Unequal Technologies is a thin insert designed to sit inside the top of a football helmet, combining a coated aramid fabric (Tridur) and form‑fitting Aircor foam to help reduce acceleration and spread impact forces. Its low profile makes it suitable for both practice and game use because it remains hidden under the shell and does not interfere with standard helmet fitment. Independently tested by an accredited lab, the liner is intended to be a supplemental layer to a properly fitted helmet, not a replacement for certified helmet systems.

How does the Gyro 2 attenuate impacts inside a helmet?

The Gyro 2 uses Unequal’s NURO technology, a dual composite combining Tridur — a military‑grade, coated aramid fabric — and Aircor comfort foam. Together these layers redirect and absorb energy across a wider surface area, lowering peak forces transmitted to the head during collisions.

• Patented Tridur layer disperses force laterally across the liner
• Aircor foam compresses to absorb and reduce acceleration
• Independent lab testing shows reductions in severity index up to 35%

Will the Gyro 2 change how my helmet fits or feels?

The insert is 1/4" thick and compresses to roughly 1/8" under load, so it minimally alters internal space while often improving fit for slightly oversized youth helmets. It installs without adhesive and sits with the black comfort side toward the head and the green dispersion fabric facing the shell.

• Thin profile preserves original helmet geometry
• Can improve fit for helmets that are a bit large
• Trim-to-fit capability with ordinary scissors for custom sizing

Is the Gyro 2 permitted for use in games and practices?

Because the Gyro 2 is concealed inside the helmet and not an external attachment, many organizations permit its use in both practices and games. Unequal provides independent lab data supporting performance, and the product complies with NFHS allowances for supplemental internal liners.

• Concealed design avoids external modifications to the shell
• Used in practices and games where internal liners are allowed
• Backed by accredited‑lab results demonstrating measurable reduction in severity index

How easy is installation and maintenance?

The Gyro 2 is designed for straightforward, tool‑free insertion into the helmet crown. It aligns with a round front tab, requires no adhesive, and can be removed for inspection or cleaning. Routine checks during helmet fittings are recommended to ensure correct placement.

• Drop‑in placement with front tab alignment
• No adhesives or modification of the helmet required
• Removable and trim‑adjustable for coaches or equipment managers

Who is this for: The Unequal Gyro 2 is aimed at youth, high‑school, and club football players, coaches, parents, and equipment managers looking for a discreet, supplemental layer of internal helmet protection that can be used in both practice and game environments. It suits teams wanting an easily installed, lab‑tested add‑on to improve helmet fit and add energy‑dispersion capability without altering the helmet’s exterior or voiding standard fitting protocols.