Trek has introduced its new version of MTB 27.5 Fuel EX 2015. The new bike uses the advice of Team Penske and Fox for the development of the new rear suspension, which always uses the pattern Full Floater, but also put a new shock developed by Penske, known team in Indy and NASCAR, and Fox. The concept is the same suspension used in Formula Indy and NASCAR, "regressive damping" in which the damper is closed when cornering or while pedaling, but it opens instantly when there is a hit. In this way it manages to be fast on each path. This technology is applied to the whole new range 27.5 Fuel EX, both with carbon frame and aluminum. Prices are expected from about 2600 to reach the 5000 Euro for the top version.