The Trilogy Classic is a bombproof all-mountain binding with a legacy of proven performance. Designed to handle anything you throw at it, season after season, with minimal changes and maximum reliability. Classics aren’t made—they’re earned.

Straps

Exoframe 4.0 Ankle Strap - Lightweight, super durable and provide a locked in ride feel.

TS 2.0 Rhombus Toe Strap - Multi-Positional options, thermoplastic anti-slip material and fit to any boot.

Footbed + Baseplate

Stage 4 Duraflex ST Baseplate



Quick edge-to-edge power and a locked in ride feel. The Stage 4 Duraflex ST baseplate is Union's go-to for anything and everything you can throw at it - cliffs, powder, side hits, double blacks... This all-mountain destroyer can handle it all.

Highbacks

Trilogy Duraflex ST - The perfect balance of flex and response for all types of riding.

Construction + Materials

Grade 8.8 steel - the strongest steel available on the market