FX Women's (WSD)

The FX Women's was Trek's women-specific take on their best-selling FX fitness hybrid — a flat-bar, lightweight aluminium bike designed for the rider who wanted something faster than a comfort cruiser but more upright than a road bike. Trek's WSD (Women's Specific Design) program adjusted standover height, top tube length, saddle, grip width, and brake reach to fit the proportions Trek's research suggested for shorter-torsoed riders. The FX WSD shipped in 1, 2, and 3 trims with mounts for racks and fenders, riser bars, and a saddle Trek developed with female testers. Trek formally retired the WSD label around 2018-2019 and folded women's-specific geometry into a unisex sizing range with size-specific touchpoints (saddle, bars, stem), meaning today's FX 1/2/3 covers what was once split between men's and women's lines. Used FX WSD bikes from 2014-2018 remain widely available on the European second-hand market and are still considered one of the most rider-friendly entry hybrids ever made.