Trek Bicycle Corporation Design (WSD) bicycle and accessories. WSD products are designed to fit female riders, and feature sizing and proportions appropriate for women. In October 2001, Trek introduced a custom bike program named Project One, which gave customers the opportunity to customize their Trek bike by selecting the bike's paint scheme and component mix. Hoping to expand into a new market segment, Trek introduced Trek Travel in December 2002, a provider of luxury and performance cycling vacations in Europe and North America. Trek Travel operated as a wholly owned subsidiary of Trek Bicycle until January 2007, when Trek spun off its interests
Bicycle suspension RockShox, and (to a lesser extent) X-Fusion, RST, Suntour and Magura. Some bicycle manufacturers (notably Cannondale and Specialized) also make their own suspension systems to fully complement and integrate the bike set-up. Although much less common, some road bicycles do incorporate suspensions, particularly the Soft Tail variety mentioned above. One example is Trek Bicycle Corporation's s.p.a (Suspension Performance Advantage) rear suspension, offered on some of their Pilot models, but the system was removed for the 2008 model year. Virtually all bicycles produced by Alex Moulton bicycles also have very effective full suspension, due to the low unsuspended mass of the